Since god is a man made concept and the bible (or any other god book) is written by man, any morality(s) have been made by mans tribes. When circumstances within the tribe change then morals change.
Example: cannibalism. In the past several societies/tribes around the world practiced cannibalism as a part of their culture (tribe). Not so much any more, their societies have changed.: https://en.wikipedia.org/wiki/Human_cannibalism
Religious belief, not evidence, lets the believers claim a god derived morality. It makes them feel good to have a ruling daddy.
Example: cannibalism. In the past several societies/tribes around the world practiced cannibalism as a part of their culture (tribe). Not so much any more, their societies have changed.: https://en.wikipedia.org/wiki/Human_cannibalism
Religious belief, not evidence, lets the believers claim a god derived morality. It makes them feel good to have a ruling daddy.
Being told you're delusional does not necessarily mean you're mental.