If our sense of right and wrong shows that God made us different from other animals, when and how did this occur? Who were those extinct Neanderthals and Denisovans with whom we share 46 chromosomes? Lewis, again in the 1940s, pondered human evolution, our spiritual nature, and the Genesis account ("The Fall of Man", in The Problem of Pain). For Lewis, however and whenever God gave humanity a spirit—the ability to commune with God in a way other animals cannot—it would not have to be something visible: a different skull, or more durable artifacts, or perhaps not even a jump in intelligence.
As a Christian biologist, I'm intrigued by how those who trust in Jesus Christ become temples of God (1 Cor. 6:19). What a paradox! The lost potential was always evident, but we're darkened temples until God's presence comes. Then the transformation of all our weakness—our darkened spirit, our human psychology running from God in fear and shame, and the humble biology of a primate—begins to demonstrate God's glory.
Bless the LORD, O my soul, and all that is within me, bless his holy name—even the neuron proteins and microRNA.
Dave Unander is a professor of biology at Eastern University, St. Davids, Pennsylvania, and a member of Providence Church in West Chester.