I seem to remember a thread a few months ago, I’ll see if I can dig it up but I don’t think it got too in depth (Do modern, naturalist theories prove Nietzsche right? - #6 by Jay313).
I grabbed a short quote from the author:
the illusion of God solved a very specific evolutionary problem for our ancestors – that of reputation-harming (and thus gene-compromising) gossip. By inhibiting selfish behaviours that they feared would be punished by supernatural agents, our ancestors would have promoted their prosocial reputations among actual people.
I think this is the main argument that I’ve seen circling around for explaining why humans evolved a belief in gods. It seems like a plausible explanation but at the same time, there’s nothing that I can see that contradicts the Christian idea of God creating us so we would ‘naturally’ seek him.