1 Kings 22:9

Then the king of Israel gathered the prophets together, about four hundred men, and said to them, “Should I go against Ramoth Gilead to battle, or should I refrain?”

They said, “Go up; for the Lord will deliver it into the hand of the king.”

But Jehoshaphat said, “Isn’t there here a prophet of the LORD, that we may inquire of him?”

The king of Israel said to Jehoshaphat, “There is yet one man by whom we may inquire of the LORD, Micaiah the son of Imlah; but I hate him, for he does not prophesy good concerning me, but evil.”

Jehoshaphat said, “Don’t let the king say so.”

Now the king of Israel and Jehoshaphat the king of Judah were sitting each on his throne, arrayed in their robes, in an open place at the entrance of the gate of Samaria; and all the prophets were prophesying before them.

Zedekiah the son of Chenaanah made himself horns of iron, and said, “The LORD says, ‘With these you will push the Syrians, until they are consumed.’”

All the prophets prophesied so, saying, “Go up to Ramoth Gilead and prosper; for the LORD will deliver it into the hand of the king.”