1 Kings 22:2-4

22:2 In the third year King Jehoshaphat of Judah came down to visit the king of Israel. 22:3 The king of Israel said to his servants, “Surely you recognize that Ramoth Gilead belongs to us, though we are hesitant to reclaim it from the king of Syria.” 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 22:50

22:50 Jehoshaphat passed away and was buried with his ancestors in the city of his ancestor David. His son Jehoram replaced him as king.