|Easton's Bible Dictionary|
Confidence, a city belonging to Hadadezer, king of Zobah, which yielded much spoil of brass to David (2 Samuel 8:8). In 1 Chronicles 18:8 it is called Tibhath.
Int. Standard Bible Encyclopedia
be'-ta (2 Samuel 8:8).
Betah (1 Occurrence)
2 Samuel 8:8 From Betah and from Berothai, cities of Hadadezer, king David took exceeding much brass. (WEB KJV JPS ASV DBY WBS YLT NAS RSV)