A common challenge to evolutionary theory is that while life does indeed change over time (what is known as microevolution), no one has ever seen one species evolve into another species (macroevolution).

If the tape was rewound and evolution started over from scratch, Conway Morris says, the evolutionary details would be different, but the end result would be similar: a species characterized by intelligence and complex civilization.

We at BioLogos believe that God used the process of evolution to create all the life on earth today. While we accept the science of evolution, we emphatically reject evolutionism. Evolutionism is the atheistic worldview that says life developed without God and without purpose. Instead, we agree with Christians who adhere to Intelligent Design and Creationism that the God of the Bible created the universe and all life. Christians disagree, however, on how God created. Young Earth Creationists believe that God created just 6,000 to 10,000 years ago and disagree with much of mainstream science. Supporters of Intelligent Design accept more of evolutionary science, but argue that some features of life are best explained by direct intervention by an intelligent agent rather than by God's regular way of working through natural processes. We at BioLogos agree with the modern scientific consensus on the age of the earth and evolutionary development of all species, seeing these as descriptions of how God created. The term BioLogos comes from the Greek words bios (life) and logos (word), referring to the opening of the Gospel of John. “In the beginning was the Word, and the Word was with God, and the Word was God. He was with God in the beginning. Through him all things were made.” (Updated on March 1, 2012)

In his sermon, Dave Swaim discusses the early chapters of Genesis that seemingly contradict scientific evidence, and he suggests that Christians have simply asked the “wrong questions” about this ancient text, which has led to warfare between the two. In light of this, Swaim wraps up his sermon with the three concluding points that he feels sums up the Biblical truth of creation: there is an all-powerful God, he has a perfect plan, and he has given us his love through Jesus Christ.

A complex biological structure with many interacting parts might appear, at first glance, as if it were originally created in its present form with all its interlocking components fully formed and intact. It doesn’t seem possible that they developed step by step via biological evolution. In Darwin’s Black Box, Michael Behe introduces a term that he and other proponents of Intelligent Design use for this concept: irreducible complexity.

Evolution is the biological model for the history of life on Earth. While some consider evolution to be equivalent to atheism, BioLogos sees evolution as a description of how God created all life. Evolution refers to descent with modification. Small modifications occur at the genetic level (in DNA) with each generation, and these genetic changes can affect how the creature interacts with its environment. Over time, accumulation of these genetic changes can alter the characteristics of the whole population, and a new species appears. Major changes in life forms take place by the same mechanism but over even longer periods of time. All life today can be traced back to a common ancestor some 3.85 billion years ago.

A common argument against biological evolution is that the theory contradicts the second law of thermodynamics. The second law says that disorder, or entropy, always increases or stays the same over time. How then can evolution produce more complex life forms over time? The answer is that the second law is only valid in closed systems with no external sources of energy. Since the Earth receives continual energy from the Sun, the second law does not apply.