Okay so my brother thinks hes god’s son and that

Patient: Okay so my brother thinks hes god’s son and that he,through football, decides who makes it to heaven. This had been on gong for about 4 weeks. He has many mood swings as he will be happy then sad and crying thinking he’s in hell. He will burst out laughing while sitting alone. He’s been asking me lately whether we are in hell or in heaven. I just came home and he was crying and he asked me if we were in hell. I’m scared now because he told me there were to many evil spirits on this world and that he wants thinks it’s time to go see god. He will stand and stare or zone out while you talk to him as well. He has tried cocaine a couple times as well as others but not lately at all he wasn’t a frequent user either just I’d say 10 times I guess. He does smoke weed every now and then but isn’t a drinker only weed. He’s 19. Can anyone tell me what’s going on and what I should do?

Doctor: