I like "The Darwinian Revolution" by Michael Ruse.
It's far more of a history book than a science book. It won't get into the nitty gritty of evidence from molecular biology and modern genetic analyses. What it does do is to chart out how exactly Darwin (and Wallace) came to understand the key features of biological evolution and how the scientific community reacted, both in converting skeptics overnight and hardening a few opponents.
Reading the book, you'll learn how Darwin was a geologist at heart and by training more so than a biologist, and how evolution fits as much into the history of geology as it does in biology. You'll learn how religious thinking was an element to all sorts of competing theories about natural history, with different thinkers taking different approaches and getting stuck in different holes.
You'll also see how Origin was both revolutionary and incremental: really all of the basic concepts were already out there at the time Darwin published, they just hadn't quite been synthesized into a whole.
I think it's a good book to set the table. When considering all the competing theories and evidence, Darwinian evolution comes naturally out of the bodies of evidence collected by others. It explains numerous puzzles that no one else could quite figure out. It emphasizes the places where adherence to faith put up barriers for some scholars in understanding what was otherwise right in front of them. I think it puts more modern opposition to evolution, like "intelligent design", into its own historical context, and after reading it's hard to argue against Dobzhansky: "nothing in biology makes sense except in the light of evolution". It's not that there are particular pieces of evidence for or against evolution, it's that all of biology is the evidence for evolution, and modern biology takes it so much for granted as truth that we hardly notice.
There are reasonable religious arguments to make about the origins of life and the universe itself, but the descent of species from common ancestors and all the phenotypic and molecular connections that link us to all other organisms of life on Earth are unimpeachable.
Ruse wrote a review/afterword of his own book decades after publication, available in PNAS:
Ruse, Michael. "The Darwinian revolution: Rethinking its meaning and significance." Proceedings of the National Academy of Sciences 106.Supplement 1 (2009): 10040-10047.
and another a few years earlier:
Ruse, M. (2005). The Darwinian Revolution, as seen in 1979 and as seen Twenty-Five Years Later in 2004. Journal of the History of Biology, 38(1), 3-17.
if you want to start with something shorter than the original book:
Ruse, M. (1979). The Darwinian Revolution: Science Red in Tooth and Claw.
My copy is of the 1999 second edition, and it looks like there is a newer 2019 version as well.