This was the land allotted for the tribe of Manasseh as Joseph’s firstborn. Gilead and Bashan were given to Machir, the firstborn of Manasseh and the father of Gilead, because he was a man of war.
So Moses gave them #– #the Gadites, Reubenites, and half the tribe of Manasseh son of Joseph #– #the kingdom of King Sihon of the Amorites and the kingdom of King Og of Bashan, the land including its cities with the territories surrounding them.
But his father refused and said, ‘I know, my son, I know! He too will become a tribe, and he too will be great; nevertheless, his younger brother will be greater than he, and his offspring will become a populous nation.’