1 Kings 22:4
And he said unto Jehoshaphat, Wilt thou go with me to battle to Ramoth–gilead? And Jehoshaphat said to the king of Israel, I am as thou art, my people as thy people, my horses as thy horses.
Cross-reference
2 Kings 3:7 records Jehoshaphat's identical pledge to Joram: 'I am as you are, my people as your people, my horses as your horses.'
2 Chronicles 18:3 is the parallel account of this same exchange between Ahab and Jehoshaphat.
2 Chronicles 19:2 records Jehu rebuking Jehoshaphat for this alliance, calling it helping the wicked.
Proverbs 13:20 warns that companions of fools face destruction, illustrating the danger Jehoshaphat entered by allying with Ahab.
1 Corinthians 15:33 warns that evil company corrupts, echoing the spiritual peril Jehoshaphat faced by joining Ahab.
2 Corinthians 6:17 commands separation from unbelievers, which Jehoshaphat failed to do by allying with Ahab.
Ephesians 5:11 forbids fellowship with darkness, directly opposing Jehoshaphat's partnership in Ahab's war.
2 John 1:11 says greeting a false teacher shares in evil, which Jehoshaphat did by actively joining Ahab's campaign.
2 Chronicles 18:2 is the parallel account of this same event, adding details about Ahab's hospitality.
2 Kings 8:28 describes a later coalition of Israel and Judah fighting at Ramoth-gilead, echoing this earlier alliance.