'Prophets' in the Bible

So the king of Israel got together all the prophets, four hundred men, and said to them, Am I to go to Ramoth-gilead to make war or not? And they said, Go up: for God will give it into the hands of the king.

Now the king of Israel and Jehoshaphat, the king of Judah, were seated on their seats of authority, dressed in their robes, by the doorway into Samaria; and all the prophets were acting as prophets before them.

And all the prophets said the same thing, saying, Go up to Ramoth-gilead, and it will go well for you, for the Lord will give it into the hands of the king.

Now the servant who had gone to get Micaiah said to him, See now, all the prophets with one voice are saying good things to the king; so let your words be like theirs, and say good things.

And he said, I will go out and be a spirit of deceit in the mouth of all his prophets. And the Lord said, Your trick will have its effect on him: go out and do so.

And now, see, the Lord has put a spirit of deceit in the mouth of these prophets of yours; and the Lord has said evil against you.

And early in the morning they got up and went out to the waste land of Tekoa: and when they were going out, Jehoshaphat took his station and said to them, Give ear to me, O Judah and you people of Jerusalem: have faith in the Lord your God and you will be safe; have faith in his prophets and all will go well for you.

And the Lord sent them prophets to make them come back to him; and they gave witness against them, but they would not give ear.

Then he put the Levites in their places in the house of the Lord, with brass and corded instruments of music as ordered by David and Gad, the king's seer, and Nathan the prophet: for the order was the Lord's, given by his prophets.

But they put shame on the servants of God, making sport of his words and laughing at his prophets, till the wrath of God was moved against his people, till there was no help.