Chronicles II 28:5

5 And the Lord his God delivered him into the hand of the king of Syria; and he smote him, and took captive of them a great band of prisoners, and carried him to Damascus. Also delivered him into the hands of the king of Israel, who smote him with a great slaughter.

Chronicles II 28:5 Meaning and Commentary

2 Chronicles 28:5

Wherefore the Lord his God delivered him into the hand of the
king of Syria
Whose name was Rezin, ( 2 Kings 16:5 ) , though that is an after expedition to this, which is there related. The Lord is called the God of Ahaz, because he was so of right; he had dominion over him, and ought to have been worshipped by him; and, besides, he was so by virtue of the national covenant between God and the people Ahaz was king of; and moreover, Ahaz professed he was his God, though in an hypocritical manner, and he forsook the true worship of him:

and they smote him, and carried away a great multitude of them
captives, and brought them to Damascus;
whereas in a later expedition, related in ( 2 Kings 16:5 ) , they did not succeed:

and he was also delivered into the hand of the king of Israel;
whose name was Pekah:

who smote him with a great slaughter;
as is next related.

Chronicles II 28:5 In-Context

3 And to their idols in the valley of Benennom, and passed his children through the fire, according to the abominations of the heathen, whom the Lord cast out from before the children of Israel.
4 And he burnt incense upon the high places, and upon the roofs, and under every shady tree.
5 And the Lord his God delivered him into the hand of the king of Syria; and he smote him, and took captive of them a great band of prisoners, and carried him to Damascus. Also delivered him into the hands of the king of Israel, who smote him with a great slaughter.
6 And Phakee the son of Romelias king of Israel, slew in Juda in one day a hundred and twenty thousand mighty men; because they had forsaken the Lord God of their fathers.
7 And Zechri, a mighty man of Ephraim, slew Maasias the king's son, and Ezrican the chief of his house, and Elcana the king's deputy.

The Brenton translation of the Septuagint is in the public domain.