1 Kings 22:4

22:4 Then he said to Jehoshaphat, “Will you go with me to attack Ramoth Gilead?” Jehoshaphat replied to the king of Israel, “I will support you; my army and horses are at your disposal.”

1 Kings 22:20-22

22:20 The Lord said, ‘Who will deceive Ahab, so he will attack Ramoth Gilead and die there?’ One said this and another that. 22:21 Then a spirit stepped forward and stood before the Lord. He said, ‘I will deceive him.’ The Lord asked him, ‘How?’ 22:22 He replied, ‘I will go out and be a lying spirit in the mouths of all his prophets.’ The Lord said, ‘Deceive and overpower him. Go out and do as you have proposed.’