Hi - sorry for the unhelpful postings by one of our community members. Sometimes people post that things that are not at all helpful (sometimes by people who have schizophrenia). Ignore those posts that are not helpful.
What country are you in?
Your husband definitely needs help as quickly as possible. It sounds like classic paranoid schizophrenia. There are medications and therapy (psychological therapy) that can really help him. But you need to get him help as quickly as possible. See a Psychiatrist and also a psychologist.