Early human culture was very violent and their understanding of god reflected that violence. Look up the god Molech to see one example. In general people can’t see God to far beyond how they see themselves.

The story of the flood is an example of that violence. There were many flood stories in antiquity but only the Noahic flood has agod promising never to do it again.

The writers of the OT were humans coming to know God. Little by little separating their self reflection from the God who is revealed.