2 Chronicles 18:3-4

Ahab king of Israel said to Jehoshaphat king of Judah, “Will you go with me against Ramoth-gilead?” And he said to him, “I am as you are, and my people as your people, and we will be with you in the battle.” Moreover, Jehoshaphat said to the king of Israel, “Please inquire first for the word of the LORD.”