And it came to pass in the fifth year of Rehoboam,.... In the fourth year, the apostasy of him and his people began; and, in the year following, what is next related happened, as a punishment of it: Shishak king of Egypt came up against Jerusalem; of whom see Kg1 11:40, because they transgressed against the Lord; transgressed the law of the Lord by falling into idolatry and other abominable evils; the Targum is,"against the Word of the Lord.''