John Gills Exposition of the Bible Commentary - Joshua 12:2
Sihon king of the Amorites, who dwelt in Heshbon ,.... Which he took from the Moabites, and made his capital city, Numbers 21:26 , and ruled from Aroer, which is upon the bank of the river of Arnon ; a city of Moab, which never fell into the hands of Sihon, and therefore he is said to rule from it but not over it: and from the middle of the river ; that is, the river Arnon, which being the boundary of the Moabites and Amorites, the king of the Amorites might be said to rule... read more
Matthew Henry's Complete Commentary - Joshua 12:1-6
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. Note, Fresh mercies must not drown the remembrance of former mercies, nor must the glory of the present instruments of good to the church be suffered to eclipse and diminish the just honour of those who have gone before them, and who were the... read more