I've read Samuel Clemons rejected the Bible and Christianity because the question of the flood, and the destruction of so many (thousands, millions, billions?) "innocents".
My son is going through a crisis of faith right now because of God’s orders in the Old Testament through His prophets to destroy the enemies of Israel, down to the last baby.
I went through the same crisis years ago - and never resolved it, except that I have come to trust God enough to wait for answers in heaven.