And Og king of Bashan, one of the remnant of the Rephaim, who lived in Ashtaroth and Edrei.
Joshua, or whoever else is the historian before he comes to sum up the new conquests Israel had made, in these verses receives their former conquests in Moses's time, under whom they became masters of the great and potent kingdoms of Sihon and Og.
Commenting on Joshua 12:1-6
And the coast of Og king of Bashan,.... The country that he reigned over, who was another king of the Amorites, smitten by Israel in the times of Moses: which was of the remnant of the giants; See Gill on Deu 3:11, that dwelt at Ashtaroth and at Edrei; of which two places see Deu 1:4; it seems as if Og had a palace in...
Coast of Og king of Bashan - Concerning this person see the notes on Deu 3:11, and on Num 21:35, etc. The remnant or the giants - Or, Rephaim. See the notes on Gen 6:4; Gen 14:5, and Deu 2:7, Deu 2:11.