Deuteronomy 18

This Moses whom they refused, saying, Who made thee a ruler and a judge? the same did God send to be a ruler and a deliverer by the hand of the angel which appeared to him in the bush. He brought them out, after that he had showed wonders and signs in the land of Egypt, and in the Red sea, and in the wilderness forty years. This is that Moses, which said unto the children of Israel, A prophet shall the Lord your God raise up unto you of your brethren, like unto me; him shall ye hear. [Deuteronomy 18:15] This is he, that was in the church in the wilderness with the angel which spake to him in the mount Sina, and with our fathers: who received the lively oracles to give unto us

"Like me," says Moses. This means according to the form of the flesh, not to the eminence of majesty. Therefore we find the Lord Jesus called a prophet. Accordingly that woman is no longer greatly in error when she says, "I see that you are a prophet." She begins to call her husband, to exclude the adulterer. "I see that you are a prophet." And she begins to ask about a thing that constantly disturbs her.

A prophet shall the Lord your God raise up unto you—him ye shall hear. And that man who shall not hear what ever that prophet shall speak in my name, that soul shall be cut off from his people.

It is written in Deuteronomy, "[The Lord] your God will raise up a prophet like me for you from your brothers. You shall hear him; and it shall be that every soul which will not hear that prophet shall be destroyed from his people." Therefore some prophet was specially expected who would be similar to Moses in some respect, to mediate between God and humanity, and who would receive the covenant from God and give the new covenant to those who became disciples. And the people of Israel knew so far as each of the prophets was concerned that no one of them was the [special] one announced by Moses.

This Moses whom they refused, saying, Who made thee a ruler and a judge? the same did God send to be a ruler and a deliverer by the hand of the angel which appeared to him in the bush. He brought them out, after that he had showed wonders and signs in the land of Egypt, and in the Red sea, and in the wilderness forty years. This is that Moses, which said unto the children of Israel, A prophet shall the Lord your God raise up unto you of your brethren, like unto me; him shall ye hear. [Deuteronomy 18:18-19] This is he, that was in the church in the wilderness with the angel which spake to him in the mount Sina, and with our fathers: who received the lively oracles to give unto us

We can be prepared to find some prophet even of impiety—and perhaps not just one but several—who will tell us of a word of the Lord, which the Lord has not at all commanded, or a "word of wisdom" which has nothing whatever to do with wisdom. His purpose is to slay us by the word of his mouth.