Moses
Deuteronomy 3:18BSB·traditional attribution

At that time I commanded you: “The LORD your God has given you this land to possess. All your men of valor are to cross over, armed for battle, ahead of your brothers, the Israelites.

John Calvin Reformed @genevareformer

18. And I commanded you at that time. This address is directed only to those to whom an inheritance was given on the other side of Jordan; but Moses declares that he had introduced an agreement that the two tribes and a half should not enjoy their possession until they had accommpanied their brethren in the subjugation of the land of Canaan.

Matthew Henry Presbyterian @wholebiblehenry

Having shown how this country which they were now in was conquered, in these verses he shows how it was settled upon the Reubenites, Gadites, and half the tribe of Manasseh, which we had the story of before, Num. 32. Here is the rehearsal. 1.

Commenting on Deuteronomy 3:12-20

John Gill Reformed Baptist @doctorgill

But your wives, and your little ones, and your cattle,.... These were to be left behind: for I know that ye have much cattle; which made the countries of Gilead and Bashan, so famous for pasturage, agreeable to them; see Num 32:1 these, under the care of servants, and also their wives and children: shall abide in your cities which I have given you; and...