Organisms have changed significantly over time. In rocks more than 1 billion years old, only fossils of single-celled organisms are found. Moving to rocks that are about 550 million years old, fossils of simple, multicellular animals can be found. At 500 million years ago, ancient fish without jawbones surface; and at 400 million years ago, fish with jaws are found. Gradually, new animals appear: amphibians at 350 million years ago, reptiles at 300 million years ago, mammals at 230 million years ago, and birds at 150 million years ago.¹ As the rocks become more and more recent, the fossils look increasingly like the animals we observe today.

The Transition to Land: Sea Creatures to Land Animals

Fossils of land animals, or tetrapods, first appear in rocks that are about 370 million years old. In older rocks, only sea creatures are found. But in 1998, scientists found a fossilized fin, 370 million years old, with eight digits similar to the five fingers humans have on their hands, as shown in Figure 1. However, the fin was undoubtedly that of a fish, which means this fossil is strong evidence of a transitional form.

Figure 1:An Illustration of the fossilized fin found in 1998. Its resemblance to a tetrapod is an indication of gradual evolutionary change from sea creatures to land animals. Source: Image is used by permission from Falk, Coming to Peace, 113.

One of the great success stories in the examination of the fossil record was the finding of a near-perfect fossilized transition between a vertebrate adapted for water and one adapted for land. Evolutionary biologist Neal Shubin set out to find a more complete transitional specimen than the 1998 fin. He determined the exact age of rock that he expected would yield a transitional land/water animal, and then he and his team spent four summers in the Arctic scouring rocks of that age to find one. The results (see Figure 2 below) were spectacular.²

From Reptiles to Mammals

Mammals first appeared in the fossil record about 230 million years ago, nearly 70 million years after reptiles first appeared. One group of reptiles, the cynodonts, first appeared about 260 million years ago and became increasingly mammal-like in more recent fossils—circa 245 million years ago. This change can be seen most clearly in the bone structure of the ear, as illustrated in Figure 3.

Figure 3: As shown in the image above, transitional fossils of cynodonts had two jaw hinges. These fossils date from a time when the dentary and squamosal bones were beginning to take over the role of jaw hinge (hinge #2). This allowed the articular and quadrate bones to evolve into the second and third bones of the mammalian ear, as shown on the right. Source: Image used by permission from Falk, Coming to Peace, 119. Originally from F. H. Pough, J. B. Heiser, and W. N. McFarland, Vertebrate Life, 4th ed. (Upper Saddle River, NJ: Prentice Hall, 1996), 607.

Scientists found a species of cynodonts, dating to just before the emergence of mammals, that had a double jaw hinge like that of a mammal. A pair of bones found in even earlier cynodont fossils seems to have transitioned slowly into the ear. No other fossils have been found that share a similar structure to the transitional cynodonts and date back before the time of mammals. Likewise, soon after mammals appeared, these cynodonts became extinct. This timing implies that the cynodont fossils record the transition from reptiles to mammals.³

Transitional Forms: Few and Far Between

Transitional forms occur just when one might expect to see a change from one body type to another. However, a common objection is that few transitional fossils have been discovered; thus many lineages cannot be traced smoothly.

There are several reason for these gaps in the fossil record. First, fossilization is a very rare event. Plus, transitional species tend to appear in small populations, where rapid changes in the environment can provide a stronger evolutionary drive. Finally, because fossilization itself is a rare event, smaller populations are sure to produce fewer fossils. The fact that transitional species have been found at all is remarkable, and it offers further support of gradual, evolutionary change.

Many people assume that Darwin’s theory must have shaken the foundations of the Christian faith because of the stark difference between evolution and the idea of a six-day creation. In truth, the literal six-day interpretation of Genesis 1–2 was not the only perspective espoused by Christian thinkers prior to the publication of The Origin of Species in 1859. The works of many early Christian theologians and philosophers reveal an interpretation of Genesis compatible with Darwin’s theory.

Early Christian Thought

Origen, a third-century philosopher and theologian from Alexandria, Egypt—one of the great intellectual centers of the ancient world—provides an example of early Christian thought on creation.

Best known for On First Principles and Against Celsus, Origen presented the main doctrines of Christianity and defended them against pagan accusations. Origen opposed the idea that the creation story should be interpreted as a literal and historical account of how God created the world. There were other voices before Origen who advocated more symbolic interpretations of the creation story. Origen’s views were also influential for other early church thinkers who came after him.¹

St. Augustine of Hippo, a bishop in North Africa during the early fifth century, was another central figure of the period. Although he is widely known for Confessions, Augustine authored dozens of other works, several of which focus on Genesis 1–2.² In The Literal Meaning of Genesis, Augustine argues that the first two chapters of Genesis are written to suit the understanding of the people at that time.³

In order to communicate in a way that all people could understand, the creation story was told in a simpler, allegorical fashion. Augustine also believed God created the world with the capacity to develop, a view that is harmonious with biological evolution.⁴

Later Christian Thought

There are many other non-literal interpretations of Genesis 1–2 later in history. St. Thomas Aquinas, a well-known thirteenth-century philosopher and theologian, was particularly interested in the intersection of science and religion and was strongly influenced by Augustine. Aquinas did not fear the possible contradiction between the Genesis creation story and scientific findings.

In Summa Theologica, he responds to the question of whether all six days of creation are actually a description of a single day, a theory Augustine had suggested. Aquinas argues in favor of the view that God created all things to have potential:

On the day on which God created the heaven and the earth, He created also every plant of the field, not, indeed, actually, but “before it sprung up in the earth,” that is, potentially.…All things were not distinguished and adorned together, not from a want of power on God’s part, as requiring time in which to work, but that due order might be observed in the instituting of the world.⁵

Augustine’s creation perspective can be seen even as late as the eighteenth century—just before Darwin published The Origin of Species—in the works of John Wesley. An Anglican minister and early leader in the Methodist movement, Wesley, like Augustine, thought the scriptures were written in terms suitable for their audience. He writes,

The inspired penman in this history [Genesis] … [wrote] for the Jews first and, calculating his narratives for the infant state of the church, describes things by their outward sensible appearances, and leaves us, by further discoveries of the divine light, to be led into the understanding of the mysteries couched under them.⁶

Wesley also argues the scriptures “were written not to gratify our curiosity [of the details] but to lead us to God.”⁷

In the nineteenth century, Princeton Theological Seminary was known for its staunch defense of conservative Calvinism and the absolute authority of Scripture. Perhaps the most noted Princeton theologian of that era, B. B. Warfield, accepted evolution as giving the proper scientific account of human origins. He believed that hearing God’s voice in Scripture and the findings of solid scientific work were not at odds. As historian Mark Noll puts it, “B. B. Warfield, the ablest modern defender of the theologically conservative doctrine of the inerrancy of the Bible, was also an evolutionist.”⁸

Conclusion

The history of Christian thought has not been consistently dominated by proponents of a literal interpretation of Genesis. The discoveries of modern science should neither be seen as the instigator of some abandonment of trust in Scripture, nor as contradictory to Scripture, but as guideposts toward a proper understanding of Scripture’s meaning.

Augustine offers this advice:

In matters that are so obscure and far beyond our vision, we find in Holy Scripture passages which can be interpreted in very different ways without prejudice to the faith we have received. In such cases, we should not rush in headlong and so firmly take our stand on one side that, if further progress in the search of truth justly undermines this position, we too fall with it. That would be to battle not for the teaching of Holy Scripture but for our own, wishing its teaching to conform to ours, whereas we ought to wish ours to conform to that of Sacred Scripture.⁹

Many believe that before Darwin published The Origin of Species in 1859, Christians as a whole maintained an entirely literal, six-day interpretation of Genesis in which the earth was only a few thousand years old. In fact, however, the idea of an old earth had already become increasingly popular among Christians throughout the half century leading up to The Origin of Species. ¹

Another misconception is that the arrival of Darwin’s theory led the scientific and theological communities to immediately take up positions opposing each other. But history reveals that one of the earliest supporters of evolutionary theory in the American scientific community was a devout Christian botanist named Asa Gray. And among theologians, BB Warfield—an architect of the contemporary evangelical understanding of biblical inerrancy—believed that certain forms of evolution were also compatible with a high view of Scripture.

The First Christian Response to Origin of Species in America

Darwin did not invent the idea of evolution. By the time The Origin of Species was published, the idea of evolution in many natural processes was already popular, and the term development was used in its place for discussions of society’s change or the history of the solar system.² What’s more, it was widely accepted that the earth was much older than previously thought. Most of the groundwork for this understanding resulted from geological work done earlier that century. Through meticulous study of the fossil record, naturalists helped spread the view that the earth was old rather than young.

See How are the ages of the earth and universe calculated?

Though many people like to focus on Christian hostility to evolutionary theory, a careful look at history reveals some surprising facts. For instance, the first American scientist to carefully review and publically support Darwin’s Origin of Species was a devout Christian named Asa Gray, now regarded as one of the most prominent American biologists of the 19^th century. A shy person who avoided politics, Gray worked quietly and does not have the same name recognition as scientists like Louis Agassiz and T.H. Huxley—both flamboyant self-promoters who provoked public debate. But, his brilliant research during his 30-year career at Harvard University helped usher in the era of modern biology in the United States.

Source: http://www.huh.harvard.edu/libraries/Gray_Bicent/images/gray_1325.jpg

Asa Gray made his commitment to Christ in 1835, a few years after completing medical school (much like Francis Collins of our own era). ³ As a professing Christian, Gray was a committed churchgoer and member of a local congregation in Cambridge, Massachusetts. As a professional scientist, he insisted that science was neutral in matters of religion and metaphysics. Gray found evolutionary theory incredibly stimulating to his scientific research, but never found it threatening to his faith. Both before and after reading Origin of Species, Gray remained firmly grounded in the Nicene Creed, a profession of faith that Christians have shared since the early Church. ⁴

What happened when Origin of Species burst onto the scene? Gray’s extensive research on American and Japanese plants—which he published after corresponding with Charles Darwin—had already convinced him that species and genera found in both countries resulted from common ancestry, not separate creations. He responded to Darwin’s book by writing the first major review⁵ of Origin on his side of the Atlantic, and he defended Darwin’s scientific theory in a series of meetings of the American Association for the Advancement of Science in 1859 and 1860. Gray was determined that Origin would get a fair reading from the scientific community, and he even took a leading role in negotiations to reprint Origin in the United States in 1860, ensuring that Americans could have the most accurate edition in their hands.

Regarding the theological implications of evolution, Gray believed that Darwin’s theory was not atheistic, although he recognized that some would use it as an “excuse” for unbelief. Henceforth, he concluded, we need “to reshape” the argument from design “in such wise as to harmonize our ineradicable belief in design with the fundamental scientific belief of continuity in nature, now extended to organic as well as inorganic forms, to living beings as well as inanimate things.” The question of whether or not life evolves should not be confused with the issue of God’s existence. Instead, Gray thought that each issue should be investigated using methods appropriate to the subject of inquiry. His refusal to argue for either extreme in this contentious debate upset both anti-evolutionists and radical popularizers of science, both of whom were eager to believe that evolution implied atheism.⁶

See How is BioLogos different from Evolutionism, Intelligent Design, and Creationism?

Early Theological Concerns with Evolution

In the decades after Origin of Species was published, theologians began to ponder the compatibility of Darwin’s theory and Christian doctrine. Some of them adopted Gray’s view that evolution was God’s method of creation.⁷ Others argued that since Darwin explained away the apparent design in nature, it was compatible only with atheism.⁸ Some scholars accepted Darwin’s argument for common ancestry, but rejected the idea of natural selection, either for scientific, philosophical, or theological reasons.⁹ Others resisted evolution specifically for the human species, partly due to concerns that evolution could conflict with Christian claims that human beings are created in the image of God.¹⁰

See How could humans have evolved and still be created in the "Image of God"?

With time, however, even some of the more conservative theologians became comfortable with evolution. B.B. Warfield, for instance, developed a powerful and enduring legacy in American evangelicalism for his belief that the Bible communicates revelation from God entirely without error. Yet while he defended biblical inerrancy, Warfield was also a cautious proponent of the possibility that God could have brought about life through evolution. His basic stance was a doctrine of providence that saw God working in and with the processes of nature, rather than completely replacing them. In Warfield’s mind, a high view of biblical authority was fully compatible with a divinely guided process of evolution.¹¹

Rise of Young Earth Creationism

Although many Christians were concerned about the implications they found in Darwin’s theory of evolution, by the end of the nineteenth century very few Christian authors argued for a young earth. Enthusiasm for this was largely confined to the Seventh-day Adventists, who followed the writings of their founding prophet, Ellen G. White. She claimed to have seen the creation of the earth in a vision from God. In another vision, God revealed to her that Noah’s flood produced the fossil record.¹² Early Adventists thus explained the geological data found in the early nineteenth century with their interpretation of the flood story of Genesis 6-8.

Between 1910 and 1915, a group of conservative Christians wrote a large collection of papers titled The Fundamentals.¹³ They clarified the beliefs of conservative Christians intent on preserving the faith from the threats of their time. Interestingly, The Fundamentals put no emphasis on Noah’s flood as an explanation of geological data and the contributors accepted an old earth. Even William Jennings Bryan, a fundamentalist who crusaded against the teaching of evolution in public schools, accepted an old earth.

Nevertheless, the modern Creationist campaign gained traction as an anti-evolution movement in the decades that followed. The 100th anniversary of Darwin’s publication in 1959 brought with it a cry from academics to make the public more aware of Darwin’s theory. Around the same time, the federal government funded the Biological Sciences Curriculum Study (BSCS), which produced a series of textbooks that taught evolution without reservation. Many conservative Christians at the time saw this as an attempt to “ram evolution down the throats of children.”¹⁴

As if in response to this outcry, John Whitcomb and Henry Morris updated Adventist flood geology in their 1961 book, The Genesis Flood: The Biblical Record and Its Scientific Implications.¹⁵ Whitcomb and Morris gave an explanation for how Noah’s flood could account for the geological evidence for an older earth. Soon after, small groups of conservative Christian scientists began to form in support of this research. They came to be known as Young Earth Creationists and referred to their flood geology as scientific creationism. The movement continued to grow, and by the 1970s the term “Creationism” increasingly came to mean only the narrow belief that God created in 6 days and the earth is young, not the larger, foundational belief that God is the Maker of heaven and earth, regardless of the time scale involved.

Conclusion

Going back to the original publication of Origin of Species in 1859, we have seen that the original Christian reception of Darwin’s theory was not universally hostile, and that Asa Gray even found it scientifically insightful. With his faith firmly grounded in the creeds of the early church, Gray conducted brilliant scientific research and maintained an unwavering commitment to Christ.

It was actually not until the second half of the 20^th century that Young Earth Creationism became a mainstream view within the evangelical community. Knowing this, many Christians today have decided to stop perpetuating a “war” with science. Prominent scholars like Asa Gray and BB Warfield demonstrate that it is indeed possible to maintain a high view of scripture and accept scientific evidence of evolution.

The BioLogos view holds that both Scripture and modern science reveal God’s truth, and that these truths are not in competition with one another. While there are varying views within the BioLogos community of how to reconcile the truths of science and Scripture on particular issues (for example with regards to a historical Adam¹), we believe that the Bible is the divinely inspired and authoritative Word of God. BioLogos accepts the modern scientific consensus on the age of the earth and common ancestry, including the common ancestry of humans.

See more on Scientific Evidence

Evolutionism

While BioLogos accepts evolution, it emphatically rejects evolutionism, the atheistic worldview that so often accompanies the acceptance of biological evolution in public discourse. Proponents of evolutionism believe every aspect of life will one day be explained with evolutionary theory. In this way it is a subset of scientism, the broader view that the only real truth is that which can be discovered by science. These positions are commonly held by materialists (also called philosophical naturalists) who deny the existence of the supernatural.

The BioLogos view celebrates God as creator. It is sometimes called Theistic Evolution or Evolutionary Creation. Theism is the belief in a God who cares for and interacts with creation. Theism is different than deism, which is the belief in a distant, uninvolved creator who is often little more than the sum total of the laws of physics. Theistic Evolution, therefore, is the belief that evolution is how God created life.

Because the term evolution is sometimes associated with atheism, a better term for the belief in a God who chose to create the world by way of evolution is BioLogos. BioLogos comes from the Greek words bios (life) and logos (word), referring to John 1:1: “In the beginning was the Word, and the Word was with God, and the Word was God.”

See "What role could God have in evolution?"

Intelligent Design

Contrary to some interpretations, Intelligent Design, or ID, makes no specific theological claims. Instead, proponents of ID argue that “certain features of the universe and of living things are best explained by an intelligent cause, not an undirected process such as natural selection,"² and that the existence of this intelligent cause is a testable scientific hypothesis. Furthermore, ID theorists attempt to show that intelligent causation is the best explanation for certain phenomena such as irreducibly complex systems (e.g. bacterial flagella) and the complex specified information in DNA.

Those who hold the BioLogos view also believe in intelligent causation. The universe and all that is in it has been created and is being sustained by God:

…in [Christ] all things in heaven and earth were created, things visible and invisible…all things were created through him and by him. He himself is before all things, and in him all things hold together. (Col 1:16,17 NRSV).

BioLogos differs from the ID movement in that we have no discomfort with mainstream science. Natural selection as described by Charles Darwin is not contrary to theism. Similarly, we are content to let modern evolutionary biology inform us about the mechanisms of creation with the full realization that all that has happened occurs through God’s activity. We celebrate creation as fully God’s. We marvel at its beauty and are in awe that we have the privilege of experiencing it.

BioLogos celebrates the reality of miracles, including the miracles of Scripture, but also those we experience in today’s world through answered prayer and the work of the Holy Spirit in our own lives. However, the demonstration of such supernatural activity in the history of the natural world is, we think, unlikely to be scientifically testable.

See "Is there room in BioLogos to believe in miracles?"

To summarize, BioLogos differs from the ID movement in three respects:

1. We are skeptical about the ability of biological science to prove the existence of an Intelligent Designer (whom we take to be the God of the Bible), while ID advocates are confident.
2. We find unconvincing those attempts by ID theorists to scientifically confirm God’s activity in natural history, while ID theorists believe they have sufficiently demonstrated it.
3. We see no biblical reason to view natural processes (including natural selection) as having removed God from the process of creation. It is all God’s and it is all intelligently designed. Those in the ID movement for the most part reject some or all of the major conclusions of evolutionary theory.

Creationism

BioLogos affirms that the earth and the universe were created. Creationism, however, generally refers to the belief that life on earth is a result of a direct flurry of supernatural intervention in a manner that is concordant with a highly literal view of Genesis 1-3. There are two main varieties of Creationists, those who believe the earth is young and those who believe it is old.

Young Earth Creationists (YECs) hold that the earth is between 6,000 and 10,000 years old, a figure derived from the genealogies presented in the Bible. YECs believe the most faithful way to read Scripture is through the lens of a literal six-day creation as presented in the first chapter of Genesis, and they further believe that a literal worldwide flood as depicted in Genesis 6-9 is responsible for geological features of the earth and the fossil record. YECs also reject the common ancestry of all species, believing that life was created as it presently appears by supernatural action. They view “macro-evolution” (as distinct from within-kind or within-species “micro-evolution”) as incompatible with Scripture and some even argue that it is a direct threat to Christianity.

BioLogos disagrees with the YEC viewpoint. This view rejects the discoveries of almost every modern scientific discipline to arrive at its conclusions and overlooks the revelation of God’s work in creation as uncovered by science. We also maintain that the YEC viewpoint stems from a particular interpretation of Genesis that ignores the rich cultural and theological context in which it was written.

See more on Scripture Interpretation

Old Earth Creationists (OECs) accept that the earth and universe are billions of years old, but maintain that these findings are in concordance with a literal reading of the first chapters of Genesis (often by interpreting the days of creation as long periods of time, or by understanding large gaps between the days of creation). OECs hold that modern science tightly corresponds with biblical accounts and assume that God included modern scientific ideas in the Bible, sometimes through secret language that would have been lost on the original audiences. OECs do not accept macro-evolution and the common ancestry of all life forms.

BioLogos disagrees with the OEC viewpoint. While accepting the scientific consensus for an old earth, this view rejects the findings of modern genetics, paleontology, developmental biology, evolutionary biology and many other biological sub-disciplines that make little sense apart from macro-evolution and common ancestry. Furthermore, we believe that God chose to reveal himself within the worldview, culture, and language of the biblical authors.

Where Christians Agree

Despite these differences, all Christians agree that the God of the Bible is the creator of the heavens and the earth. We agree on the authority of the Bible, even though we disagree on the best interpretation of particular passages. We agree that God is continually active in his sovereign governance of the universe, even though we disagree on how much God acts through natural law versus miracles. We are unified in our rejection of evolutionism, even though we use different strategies to counteract it (some reject the science of evolution, while BioLogos rejects the atheistic spin put on the science). We agree on the fundamentals of our faith: that all people have sinned and that salvation comes only through the death and resurrection of Jesus Christ. We agree that the God of our salvation is the same God we see in the wonders of his creation. Whether we ponder the intricacy of DNA, the beauty of a dolphin, or the vastness of the Milky Way, we can lift our hearts together in praise to the divine Artist who made it all.