Some years later he went down to visit Ahab in Samaria. Ahab slaughtered many sheep and cattle for him and the people with him and urged him to attack Ramoth Gilead.
Ahab king of Israel asked Jehoshaphat king of Judah, "Will you go with me against Ramoth Gilead?" Jehoshaphat replied, "I am as you are, and my people as your people; we will join you in the war."
But Jehoshaphat also said to the king of Israel, "First seek the counsel of the LORD."
So the king of Israel brought together the prophets--four hundred men--and asked them, "Shall we go to war against Ramoth Gilead, or shall I refrain?" "Go," they answered, "for God will give it into the king's hand."
But Jehoshaphat asked, "Is there not a prophet of the LORD here whom we can inquire of ?"
The king of Israel answered Jehoshaphat, "There is still one man through whom we can inquire of the LORD, but I hate him because he never prophesies anything good about me, but always bad. He is Micaiah son of Imlah." "The king should not say that," Jehoshaphat replied.
So the king of Israel called one of his officials and said, "Bring Micaiah son of Imlah at once."
Dressed in their royal robes, the king of Israel and Jehoshaphat king of Judah were sitting on their thrones at the threshing floor by the entrance to the gate of Samaria, with all the prophets prophesying before them.
Now Zedekiah son of Kenaanah had made iron horns, and he declared, "This is what the LORD says: 'With these you will gore the Arameans until they are destroyed.' "
All the other prophets were prophesying the same thing. "Attack Ramoth Gilead1 and be victorious," they said, "for the LORD will give it into the king's hand."
References for 2 Chronicles 18:11
The messenger who had gone to summon Micaiah said to him, "Look, as one man the other prophets are predicting success for the king. Let your word agree with theirs, and speak favorably."