Wow -- what a difficult situation! Thanks for your openness in sharing with us. First I would validate whatever you are feeling. Even if it's something that seems out of his control, the impact on you is hurtful. You can communicate that with him in a way that doesn't guilt trip him. The overlap of schizophrenia and eccentric religious beliefs is something with which I have a lot of personal experience. It can be challenging to navigate the gray areas. Definitely it's worth getting a diagnosis and treatment, therapy, medicine, etc. I wish you and your partner so well.

This sounds exactly like what my boyfriend's parents are going through right now. Except it's seriously ruining their relationship because my bf's dad made his wife feel like a third wheel in her own marriage. If he genuinely isn't going to do anything, then I'd say leave it be and let it turn into something to look back on and laugh at.

Tbh ask him if he (for your relationship) can go with you to see a therapist or even see one on his own! He might just be having delusions? Which sometime just happen I guess… I kinda have them too so I feel :( Can’t control when your brains wonky but i hope things work out!