2 Kings 15:13,14

He reigned a full month That dominion seldom lasts long that is founded in blood and falsehood. Menahem, either provoked by his crime, or animated by his example, soon served him as he had served his master: he went up from Tirzah A city in the tribe of Ephraim, where Jeroboam first dwelt; and smote Shallum Probably he was general of the army, which then lay encamped at Tirzah, and hearing of Shallum's treason and usurpation, he hastened to Samaria to avenge it, as Omri acted, in a like case, with regard to Zimri.