I think his religion and dedication to his father are his base. You can not impact him more, there is no room (now at least) for another opinion. And you are a woman, and he is misogynistic, which makes this nearly impossible.
I would mind my own business because I tried to communicate with relatives who were different and not good for me. I started to feel well only after I dropped the idea and started to speak with people who were good for me and my well-being.