And from Betah and Berothai, cities of Hadadezer, King David took a large amount of bronze.
God had given David rest from all his enemies that opposed him and made head against him; and he having made a good use of that rest, has now commission given him to make war upon them, and to act offensively for the avenging of Israel's quarrels and the recovery of their rights; for as yet they were not in full possession of that country...
Commenting on 2 Samuel 8:1-8
And from Betah, and from Berothai, cities of Hadadezer,.... Which, in Ch1 18:8, are called Tibhath and Chun, they having different names; or their names might be changed upon this conquest of them, and the one might be the names they went by with the Syrians, and the other the Israelites called them by; the latter is the same with Berothah in Eze 47:16; and...
2Sa 8:8 And from the cities of Betach and Berothai David took very much brass, with which, according to 1Ch 18:8, Solomon made the brazen sea, and the brazen columns and vessels of the temple. The lxx have also interpolated this notice into the text. The name Betach is given as Tibhath in the Chronicles; and for Berothai we have Chun.