John Calvin Commentary Numbers 33:50

"And Jehovah spake unto Moses in the plains of Moab by the Jordan at Jericho, saying," — Numbers 33:50 (ASV)

And the Lord spoke to Moses. The purpose and design of God in willing that these nations should be expelled, I have explained elsewhere,²²⁶ namely, lest they should contaminate the pure worship of God with their corrupting influences, should corrupt the people by their bad examples, and thus become defilements to the Holy Land.

But Moses now refers to another point. For, when he is about to speak of the division of the land, he begins by saying that it must be emptied of its inhabitants, so that its free and full enjoyment may remain for the children of Israel. We must note the connection here, for otherwise this passage would have been a supplement to the First Commandment, to which I have indeed added the latter part of the verse. But since God declares, linking these matters, You shall dispossess the inhabitants of the land, and dwell in it, for I have given you the land to possess it, it would have been absurd for one clause to be separated from the other.

²²⁶ See ante, vol. 2: p. 397, etc., etc.