Reference: Prophets, False
Morish
These, at various periods in the history of Israel, appeared in large numbers: Ahab had 'about four hundred' of them. 1Ki 22:6. Such are described as speaking "a vision of their own heart, and not out of the mouth of the Lord." Jer 23:16. There were three that opposed Jeremiah to his face
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and the king of Israel gathereth the prophets, about four hundred men, and saith unto them, 'Do I go against Ramoth-Gilead to battle, or do I forbear?' and they say, 'Go up, and the Lord doth give it into the hand of the king.'
Thus said Jehovah of Hosts: Ye do not hearken unto the words Of the prophets who are prophesying to you, They are making you vain things, A vision of their own heart they speak, Not from the mouth of Jehovah.
And it cometh to pass, in that year, in the beginning of the reign of Zedekiah king of Judah, in the fourth year, in the fifth month, spoken unto me hath Hananiah son of Azur the prophet, who is of Gibeon, in the house of Jehovah, before the eyes of the priests, and all the people, saying,
Thus said Jehovah of Hosts, God of Israel, concerning Ahab son of Kolaiah, and concerning Zedekiah son of Maaseiah, who are prophesying to you in My name falsehood: Lo, I am giving them into the hand of Nebuchadrezzar king of Babylon, and he hath smitten them before your eyes,
'But, take heed of the false prophets, who come unto you in sheep's clothing, and inwardly are ravening wolves.
Beloved, every spirit believe not, but prove the spirits, if of God they are, because many false prophets have gone forth to the world;