The Bible doesn't claim slavery is wrong because how else were they going to convert people who owned slaves? I imagine that the church of yesterday, much like people of today, picked and chose which rules they liked and didn't like to put in their religious texts. And of course people today go along with it because they're told that the bible is the word of god, and not the words of some shepherds over a thousand years ago.
People look to their religious texts for answers, and regurgitate those answers practically verbatim. They aren't willing to accept the idea that their religious texts were written by men, and that the idea of god doesn't have to be the same as those men. In fact it's practically beaten into them that if they disagree with their religious text, they will burn in a lake of fire for eternity.
People look to their religious texts for answers, and regurgitate those answers practically verbatim. They aren't willing to accept the idea that their religious texts were written by men, and that the idea of god doesn't have to be the same as those men. In fact it's practically beaten into them that if they disagree with their religious text, they will burn in a lake of fire for eternity.