1 Kings 16:23

16:23 In the thirty-first year of Asa’s reign over Judah, Omri became king over Israel. He ruled for twelve years, six of them in Tirzah.

1 Kings 22:41

Jehoshaphat’s Reign over Judah

22:41 In the fourth year of King Ahab’s reign over Israel, Asa’s son Jehoshaphat became king over Judah.