Many words have been written about the differences between evolution and Christianity. But in many ways the ideas of evolution parallel that of Christianity. For example both Evolution and Christianity have transformation as a central theme. For Christianity it is the transformation of the inner person and for evolution it the change of the outer person. While the two focus on different things they are both still talking about changing what we are.
Evolution and Christianity follow a "redeemer" scenario. In Christianity Jesus is the redeemer and those who follow him are "saved". In Evolution the redeemer is the one member of a species that has a mutation that is advantageous and leads the way to survival. The themes of transformation and redemption in Christianity became "mutation" and "survival" in Evolution. Finally, in evolution this changed member of a species must out procreate the other members for the species to be changed. Even in this Evolution parallels Christianity. For while Jesus did not have children - the spiritual "genes" of his identity are in billions of people making him the most “imitated” person to have ever lived.
So similar are underlying themes between Evolution and Christianity that it seems unlikely that they are a product of chance. It seems unlikely that Darwin would have developed his theory if he had not lived in a Christian society or had he not trained to be a clergyman. His interest may have been in the natural world but his training was in medicine and then divinity. His theory did not come out of a vacuum but adapted what he already knew, Darwin barrowed heavily from a Christian worldview for his theory which is basically a Christian framework with new names.