I found a girl I want to marry. My pastor's wife have told the girl that I am her husband. Now he told me not to marry her because she will fail me spiritually. We are preparing for our marriage. I don't know what to do. She is born again.
I would suggest finding a real church. You are not a husband until you are married. Unless the woman you are about to marry has no right to marriage because she was married before, this preacher does not know the future. He may claim to be a prophet, but the Bible states that gift of prophecy ended. See: Does God Speak Directly to Mankind Today?