Deuteronomy 13:2 and Deuteronomy 18:22 in exegetical and hermeneutical balance both show together that a false prophet will fail either one of two tests or both of two tests. If they fail either/or, or both/and, they are a false prophet: Deut 13: 1-3 "If a prophet or dreamer of dreams arises among you and gives you a sign or a wonder, and the sign or the wonder comes true concerning the sign which he spoke to you saying 'Let us go after other gods (whom you have not known) and let us serve them,' you shall not listen to that...