Deuteronomy 18:20-22

Wycliffe Bible

²⁰ Soothly a prophet shall be slain, which is depraved with pride, and will speak in my name those things, which I commanded not to him, that he should say, either by the name of alien gods. (And the prophet who is depraved with pride, and shall speak in my name those things, which I did not command him to say, or shall speak in the name of foreign, or other, gods, that prophet must be put to death.)

²¹ That if thou answerest by privy thought, How may I understand the word, which the Lord spake not? (And if thou ask within thyselves, How can we know that the Lord did not speak this word?)

²² thou shalt have this sign, or token, (to know a false prophet from a true prophet,) if that that that prophet saith before in the name of the Lord, cometh not, the Lord spake it not, but he feigned it through (the) pride of his soul, and therefore thou shalt not dread him. (thou shalt have this sign, to know a false prophet from a true prophet; If what that prophet saith beforehand in the name of the Lord, cometh not, then the Lord did not speak it, but the false prophet feigned his prophecy through the pride of his soul, and so thou shalt not fear him.)