As he did to the children of Esau which dwelt in Seir
 He did the like things for them as he did for the Ammonites: 
 when he destroyed the Horims from before them:
 which is repeated from ( Deuteronomy 2:12 ) , other instances of the like kind being here recited: 
 and they succeeded them, and dwelt in their stead, even unto this day;
 (See Gill on  Deuteronomy 2:12).