Matthew Henry on 2 Kings 16:5-9
Here is, 1. The attempt of his confederate neighbours, the kings of Syria and Israel, upon him. They thought to make themselves masters of Jerusalem, and to set a king of their own in it, Isa 7:6. In this they fell short, but the king of Syria recovered Elath, a considerable port upon the Red Sea, which Amaziah had taken from the Syrians, Kg2 14:22. What can those keep that have lost their religion? Let them expect, thenceforward, to be always on the losing hand. 2. His project to get clear of them. Having forsaken God, he had neither courage nor strength to make head against his enemies, nor could he, with any boldness, ask help of God; but he made his court to the king of Assyria, and got…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Kings 16:5
Then Rezin king of Syria and Pekah son of Remaliah king of Israel came up to Jerusalem--Notwithstanding their great efforts and military preparations, they failed to take it and, being disappointed, raised the siege and returned home (compare Isa 7:1).
Adam Clarke on 2 Kings 16:5
But could not overcome him - It is likely that this was the time when Isaiah was sent to console Ahaz; (see Isa 7:1); and predicted the death both of Rezin and Pekah, his enemies.
John Gill on 2 Kings 16:5
Then Rezin king of Syria, and Pekah son of Remaliah king of Israel, came up to Jerusalem to war,.... To fight with Ahaz, moved to it by the Lord, to chastise Ahaz for his idolatry, 2 Kings 15:37.
but could not overcome him; so as to take Jerusalem, and set up another king there, as their scheme was, Isaiah 7:5 though they had both at other times got great advantages over him, and slew many of his people, and carried them captive, see 2 Chronicles 28:5.
Keil & Delitzsch on 2 Kings 16:5-6
Of the war which the allied Syrians and Israelites waged upon Ahaz, only the principal fact is mentioned in Kg2 16:5, namely, that the enemy marched to Jerusalem to war, but were not able to make war upon the city, i.e., to conquer it; and in Kg2 16:6 we have a brief notice of the capture of the port of Elath by the Syrians. We find Kg2 16:5 again, with very trifling alterations, in Isa 7:1 at the head of the prophecy, in which the prophet promises the king the help of God and predicts that the plans of his enemies will fail. According to this, the allied kings intended to take Judah, to dethrone Ahaz, and to install a vassal king, viz., the son of Tabeel. We learn still more concerning this…