1 Kings 16:23; 1 Kings 16:29

23 In the thirty-first year of Asa king of Judah, Omri became king of Israel, and he reigned twelve years, six of them in Tirzah.
29 In the thirty-eighth year of Asa king of Judah, Ahab son of Omri became king of Israel, and he reigned in Samaria over Israel twenty-two years.