Well, I cannot be sure if it is a delusion, but a few things make me think it's something to look out for and talk to your doctor about it. I would say the fact that it is something you believed before when you had psychosis and then stopped and now you are thinking it is real again might be a sign it is your thinking being off. Also, while I know people do believe in miracles with religion, you seem to think you are being focused on by God, in a way that comes off as a little more extreme to me. Like that your shower water might suddenly be turned to holy water, or that you are being personally asked to reject your husband to be pure. Unless of course this is part of what others with your religion might typically think could happen. Do you hear God speaking to you or are you just thinking that this is what he wants? I think there could be reason to at least mention it to your doctor, and see what they think. I really can't say not being your doctor, but seems worth discussing.