1 Kings 16:23

“In the thirty first year of Asa king of Judah began Omri to reign over Israel twelve years, etc.] Which are to be reckoned not from the thirty first of Asa; for Ahab the son of Omri began to reign in his thirty eighth year, and so his reign would be but seven or eight years; but they are reckoned from the twenty seventh of Asa, the beginning of it, when Elah was slain by Zimri, and he died, which to the end of the thirty eight of Asa make twelve years; for the division, according to the Jewish chronology f352 , lasted four years; Jarchi says five f353; and from the beginning of that his reign is reckoned, though he did not reign over all Israel, or completely, until the thirty first of Asa,…”

“OMRI BUILDS SAMARIA. (Kg1 16:23-28) In the thirty and first year of Asa . . . began Omri to reign--The twelve years of his reign are computed from the beginning of his reign, which was in the twenty-seventh year of Asa's reign. He held a contested reign for four years with Tibni; and then, at the date stated in this verse, entered on a sole and peaceful reign of eight years.”

“Twelve years - That is, and he reigned twelve years, not from this thirty - first year of Asa, for he died in his thirty - eighth year, Kg1 16:29, but from the beginning of his reign, which was in Asa's twenty - seventh year, Kg1 16:15-16. So he reigned four years in a state of war with Tibni, and eight years peaceably. 3 Kings (1 Kings) 16:24”

“16:23 Omri . . . reigned twelve years in all: Omri’s son Ahab succeeded him in the seventh year of his reign (cp. 16:29), so Omri’s twelve-year rule likely includes about four years of co-regency with Ahab.”

“am 3079-3086, bc 925-918 the thirty: As it is stated in Kg1 16:10 and Kg1 16:15, 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. Ch2 22:2 twelve years: Kg1 16:8, Kg1 16:29 3 Kings (1 Kings) 16:24”

“The Reign of Omri. - Kg1 16:23. Omri reigned twelve years, i.e., if we compare Kg1 16:15 and Kg1 16:23 with Kg1 16:29, reckoning from his rebellion against Zimri; so that he only possessed the sole government for eight years (or, more exactly, seven years and a few months), viz., from the 31st to the 38th years of Asa, and the conflict with Tibni for the possession of the throne lasted about four years. "At Thirza he reigned six years," i.e., during the four years of the conflict with Tibni, and after his death two years more. Kg1 16:24 As soon as he had obtained undisputed possession of the throne, he purchased the hill Shomron (Samaria) from Shemer (Semer) for two talents of silver, about…”