1 Kings 22:2-4; 1 Kings 22:50
But in the third year Jehoshaphat king of Judah went down to see the king of Israel.
The king of Israel had said to his officials, "Don't you know that Ramoth Gilead belongs to us and yet we are doing nothing to retake it from the king of Aram?"
So he asked Jehoshaphat, "Will you go with me to fight against Ramoth Gilead?" Jehoshaphat replied to the king of Israel, "I am as you are, my people as your people, my horses as your horses."
Then Jehoshaphat rested with his fathers and was buried with them in the city of David his father. And Jehoram his son succeeded him.