I. A very formidable design laid against Jerusalem by Rezin king of Syria and Pekah king of Israel, two neighbouring potentates, who had of late made descents upon Judah severally. At the end of the reign of Jotham, the Lord began to send against Judah Rezin and Pekah, 2 Kings xv. 37. But now, in the second or third year of the reign of Ahaz, encouraged by their former successes, they entered into an alliance against Judah. Because Ahaz, though he found the sword over his head, began his reign with idolatry, God delivered him into the hand of the king of Syria and of the king of Israel (2 Chron. xxviii. 5), and a great slaughter they made in his kingdom, v. 6, 7. Flushed with this victory, they went up towards Jerusalem, the royal city, to war against it, to besiege it, and make themselves masters of it; but it proved in the issue that they could not gain their point. Note, The sin of a land brings foreign invasions upon it and betrays the most advantageous posts and passes to the enemy; and God sometimes makes one wicked nation a scourge to another; but judgment, ordinarily, begins at the house of God.