At that time Rezin the king of Syria recovered Elath for Syria and drove the men of Judah from Elath, and the Edomites came to Elath, where they dwell to this day.
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.
Commenting on 2 Kings 16:5-9
So Ahaz sent messengers to Tiglathpileser king of Assyria,.... Of whom see Kg2 15:29. saying, I am thy servant, and thy son; signifying, that he would be his vassal, and become tributary to him, and serve him as a servant to his master, or a son his father, on condition he would come to his assistance, and so he became his servant; hence his son...
Rezin . . . recovered Elath--which Azariah had got into his possession (Kg2 14:22). the Syrians came to Elath, and dwelt there unto this day--The Septuagint version has "the Edomites," which the most judicious commentators and travellers [ROBINSON] prefer.