thirty and first year. He reigned twelve years (833-821), and yet in 1 Kings 16:29 Ahab began in the thirty-eighth year of Asa. Omri began to reign de jure when he slew Zimri, in the twentyseventh year of Asa; but only de facto on the death of Tibni the usurper.
six years. Beginning in Asa's thirty-first and ending in Asa's thirty-eighth (1 Kings 16:29).