I’ve never read an explanation of God’s role in evolution. I’ve been looking, but all there are is generalities and assertions that we are dealing with pretty much two different realities, the physical described by science and the spiritual, covered by theology.
Well, here’s the short of it for me.
We can know that God often uses people that are true causes in themselves in our daily lives. For example, a person who preaches His word and brings people to Him is a true part of their conversion. It is also true that God is behind it as the one who sent the person out.
Putting that into a brief overview, God created the universe. At the beginning you have the Big Bang, laws of physics. All that. Eventually we have the rise of the first life on this planet. As that life starts its journey, it splits and multiplies and in a way it does so on its own. At the same time it is participating in God’s plan. As time goes on and mutations occur, mutations He knew were going to happen at such and such time, His creatures continue living their lives an acting in his plan. Fast forward a billion years or so and this process with His creatures participating in His plan has brought forth creatures very similar to modern man. And in a group of these creatures, two copulate. The sperm reaches the egg and life begins, but this life has a difference from its parents. Instead of an animal soul, God has given them a rational soul. They are a true human. This human is born and knows God, being a state of original justice. As they grow up they have some skills like a greater capacity for language (so I’m putting it around 70,000 years ago when behaviorally modern humans came about) and as they move around with their tribe in Africa, they eventually meet another one gifted with the same gifts. [Though I’m not going to be strict on these exact details at all.] Sometime later original sin happens and the rest is history.
As a further note on His creatures participating. If we look to our lives, He wants us to be part of the relationship with Him. We are dependent on Him for salvation for example, but it’s still a big part of our salvation that we actually do something. And when it comes to creation, it would be fitting that he would want His creatures to work with Him in His plans, not because He needs them to, but because He wants them to. In addition, this planet can only support so much life at one time. So in addition to evolution allowing His creatures to take part in His creation, it also allows us to marvel so much more at His glory to see so many things He made. I was at the museum recently and in the Evolving Planet exhibit, I looked at some of those fossils and couldn’t help but have some awe at these creatures long gone, but made by God through evolution and the role they played in the creation of today’s life.