he took - rather “he had taken.” This statement is accounting for his acquisition of so large a territory; he got it by right of conquest from the former possessors.
Kenath - This place, along with its group of surrounding villages, was gained by Nobah, one of Jair’s officers sent by him to capture it (Num 32:1, Num 32:2).
All these belonged to the sons of Machir - In their number Jair is included as having completely identified himself by his marriage and residence in Gilead with the tribe of Manasseh.