Charles Spurgeon Commentary 2 Chronicles 12:2

"And it came to pass in the fifth year of king Rehoboam, that Shishak king of Egypt came up against Jerusalem, because they had trespassed against Jehovah," — 2 Chronicles 12:2 (ASV)

And it came to pass, that in the fifth year of king Rehoboam Shishak king of Egypt came up against Jerusalem, because they had transgressed against the LORD,

That was not Shishak's reason for coming up against Jerusalem.

He had heard of the riches of Solomon; and doubtless, he came for the sake of the spoil which the palace and the temple would yield to him. But God often overrules, for the accomplishment of his own purposes, the lower motives of men. I girded you, he said of Cyrus, though you have not known me. So did he gird Shishak for the chastisement of Israel, though Shishak did not know him.

And it came to pass, that in the fifth year of king Rehoboam, Shishak king of Egypt came up against Jerusalem, because they had transgressed against the LORD,

Shishak did not know that fact, nor did he care about Jehovah.

God so ruled in providence that, when his people cast him off, he soon found a rod with which to chasten them. The king of Egypt determined to conquer them. You do not know, my friends, how God will strike you; but if you stray from his statutes, he will never be long without a rod. You will bring chastisement on yourself if you depart from the living God. You will have yourself to blame if some dire affliction happens to you.