1 Kings 16:21

Then were the people of Israel divided into two parts: halt of the people followed [lit; was after . Same expression 2 Samuel 2:10 ; cf. 1 Kings 1:7 ] Tibni the son of Ginath [Who he was, or why he was set up in opposition to Omri, it is impossible to say. It has been supposed that the army was divided in its preferences, and that part of the soldiery wished to make Tibni king, and this is perhaps the most probable conjecture. It is to be considered that the entire army was not encamped before Gibbethon. Nor are 1 Kings 1:16 , 1 Kings 1:17 fatal to this view, as Bähr maintains, because "all Israel" there clearly means all the army under the command of Omri. It is hardly likely that Tibni was set up by the people of Tirzah, after the death of Zimri, to continue the struggle. The only thing that is certain is that,the hereditary principle being overthrown, the crown appeared to be the legitimate prize of the strongest; and Tibni, who may have occupied a position of importance, or have had, somehow, a considerable following, resolved that Omri should not wear it without a fierce contest], to make him king [Omri had been already made king, i.e; anointed, 1 Kings 1:16 ]; and half renewed Omri.