Dad's still seeing things, and i put my foot down this evening

I said that if he's unwilling to talk to a doctor about his visions, i would like to not hear about it anymore. He's set in his mind that it's a religious thing, it's that i don't want to be a party to, to be feeding into his imo an erroneous pov about hallucinations. But i can't say outright that view of mine, because it would be like saying i'm an atheist, and that would be too much for him. It's a trapeze act staying sane around his blabberings, and he's been droning on about how people that don't even go to church are giving him hugs and oh my goodness it's maudlin and sickening to the highest degree. I'm letting my brother know about these visions and he's supposedly letting his doctor know so next visit the doc might present to his bible infested brain a possible secular route to take, and i can just see him shrug it off and pretend the problem is under control, he'd nod towards me and say "my son there is the best caretaker to me" getting all weepy and if i'd have the nerve i'd raise my voice in extreme distaste that i cannot handle all this, and to list off a litany of traits he exudes that are the most disgusting to me personally, and shrieking i'd bash the chair against the wall and then storm out, waiting by the car for a fun filled drive home.