I Chronicles 5:7

And Bela the son of Azaz, the son of Shema, the son of Joel,.... The pedigree of Bela, another principal man in the tribe of Reuben, is traced up to Joel the father of Shema; the same with Shemaiah, according to Kimchi and Ben Melech, Ch1 5:4 who dwelt in Aroer; which belonged to the tribe of Gad, and was rebuilt by them, Num 32:34 wherefore Kimchi observes, it may be interpreted, either from Aroer, or on the border of it, Bela dwelt: even unto Nebo, and Baalmeon; of which See Gill on Num 32:38.

This chapter gives us some account of the two tribes and a half that were seated on the other side Jordan. I. Of Reuben (Ch1 5:1-10). II. Of Gad (Ch1 5:11-17). III. Of the half-tribe of Manasseh (Ch1 5:23, Ch1 5:24). IV. Concerning all three acting in conjunction we are told, 1. How they conquered the Hagarites (Ch1 5:18-22). 2. How they were, at length, themselves conquered, and made captives, by the king of Assyria, because they had forsaken God (Ch1 5:25, Ch1 5:26).