And it came to pass. — See 1 Kings 14:25, with which this verse literally coincides, except that the last clause, “because they had transgressed,” is added by the chronicler.
In the fifth year of king Rehoboam. — The order of events is thus given: For three years Rehoboam and his people continued faithful to the Lord (2 Chronicles 11:17); in the fourth year they fell away; and in the fifth their apostacy was punished.
Shishak. — The Sesonchis of Manetho, and the sh-sh-nk of the hieroglyphs, was the first king of the 22nd dynasty. “His name,” says Ebers, “and those of his successors, Osorkon (Zerah) and Takelot, are Semitic, a fact which explains the Biblical notice that Solomon took a princess of this dynasty for his consort, and stood in close commercial relations with Egypt, as well as, on the other hand, that Hadad the Edomite received the sister of Tahpenes the queen to wife (1 Kings 11:19). In the year 949 B.C. Shishak, at the instigation of Jeroboam, took the field against Rehoboam, besieged Jerusalem, captured it, and carried off a rich booty to Thebes. On a southern wall of the Temple of Karnak, all Palestinian towns which the Egyptians took in this expedition are enumerated” (Riehm’s Handwort. Bibl. Alterth., p. 333).
Because they had transgressed. — For they had been faithless to Jehovah. This is the chronicler’s own parenthetic explanation of the event, and expresses in one word his whole philosophy of Israelite history. Of course it is not meant that Shishak had any consciousness of the providential ground of his invasion of Judah.