Calvin WrayCalvin Wray is the author of Letters From The Slippery Slope: A Lifelong Creationist Tries To Make Sense Of Evolution. What Could Go Wrong? (Amazon). Resources by this author ...If you enjoy this author, check out these resources:All ResourcesPersonal StoryBy Calvin Wray Loving God With All My DoubtsWhat I learned during my journey was that doubt isn’t actually the enemy of faith. Fear is the enemy.