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
See Verses Found in Dictionary
Then the king of Israel assembled the prophets, about four hundred men, and said to them, Shall I go against Ramoth-gilead to battle, or shall I forbear? And they said, Go up; for the Lord will deliver it into the hand of the king.
Thus saith the LORD of hosts, Hearken not to the words of the prophets that prophesy to you: they make you vain: they speak a vision of their own heart, and not from the mouth of the LORD.
And it came to pass the same year, in the beginning of the reign of Zedekiah king of Judah, in the fourth year, and in the fifth month, that Hananiah the son of Azur the prophet, who was of Gibeon, spoke to me in the house of the LORD, in the presence of the priests, and of all the people, saying,
Thus saith the LORD of hosts, the God of Israel, concerning Ahab the son of Kolaiah, and concerning Zedekiah the son of Maaseiah, who prophesy a lie to you in my name; Behold, I will deliver them into the hand of Nebuchadrezzar king of Babylon; and he shall slay them before your eyes;
Beware of false prophets, who come to you in sheep's clothing, but inwardly they are ravening wolves.
Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets have gone out into the world.