1 Kings 16:23

Overview - 1 Kings 16
Jehu's prophecy against Baasha.
Elah succeeds him.
Zimri, conspiring against Elah, succeeds him.
11 Zimri executes Jehu's prophecy.
15 Omri, made king by the soldiers, forces Zimri desperately to burn himself.
21 The kingdom being divided, Omri prevails against Tibni.
23 Omri builds Samaria.
25 His wicked reign.
27 Ahab succeeds him.
29 Ahab's most wicked reign.
34 Joshua's curse upon Hiel the builder of Jericho.
Treasury of Scripture Knowledge

1 Kings 16:23  (King James Version)
In the thirty and first year of Asa king of Judah began Omri to reign over Israel, twelve years: six years reigned he in Tirzah.

M. 3079-3086. B.C. 925-918. the thirty.
As it is stated in verses 10 and 15, that Zimri began to reign in the 27th year of Asa; and as he reigned only seven days, and Omri immediately succeeded him, this could not be the 31st, but in the 27th year of Asa. Jarchi, from Sedar Olam,
reconciles this, by stating that Tibni and Omri began to reign jointly in the 27th year of Asa; and that Tibni dying about five years afterwards, Omri began to reign alone in the 31st year of Asa. 2 Chronicles 22:2

twelve years
1 Kings 16:8 1 Kings 16:29