the children: The Gadites and the half tribe of Manasseh are joined to the genealogy of Reuben, because they inhabited the same country, and formed a sort of separate colony east of Jordan.
Gad: Genesis 30:11, in the land Bashan, Numbers 21:33, Numbers 32:34-36; Deuteronomy 3:10-17; Joshua 12:4, Joshua 13:11, Joshua 13:24-28; Psalms 22:12
Salcah: Joshua 13:11