Then Moses set aside three cities across the Jordan to the east
God had destined, as we have before seen, See ante, on Numbers 35:10-34; vol. 3, pp. 62, et seq. six cities for refuge, in case any one had killed a man, provided he could prove his innocence before the judges. As to the three which He had appointed on the other side of Jordan, Moses records that he had faithfully performed what God had commanded.
Here is, 1. The nomination of the cities of refuge on that side Jordan where Israel now lay encamped. Three cities were appointed for that purpose, one in the lot of Reuben, another in that of Gad, and another in that of the half tribe of Manasseh, Deu 4:41-43.
Commenting on Deuteronomy 4:41-49
Then Moses severed three cities,.... To be cities of refuge, according to the command of God, Num 35:14 this he did when he had conquered the two kingdoms of the Amorites, that God had given them for an inheritance to the tribes of Reuben and Gad, and the half tribe of Manasseh, Deu 4:38 though Jarchi says, and so other Jewish writers, that persons were...