Moses
Deuteronomy 7:1BSB·traditional attribution

When the LORD your God brings you into the land that you are entering to possess, and He drives out before you many nations—the Hittites, Girgashites, Amorites, Canaanites, Perizzites, Hivites, and Jebusites, seven nations larger and stronger than you—

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. A very strict caution against all friendship and fellowship with idols and idolaters. Those that are taken into communion with God must have no communication with the unfruitful works of darkness. These things they are charged about for the preventing of this snare now before them. 1. They must show them no mercy, Deu 7:1, Deu 7:2.

Commenting on Deuteronomy 7:1-11

John Gill Reformed Baptist @doctorgill

When the Lord thy God shall bring thee into the land whither thou goest to possess it,.... The land of Canaan they were just now going into to take possession of; their introduction into which is here, as in many other places, ascribed not to themselves, or their leaders, but to the Lord as their covenant God: and hath cast out many nations before thee...

Geneva Bible Notes Reformed @genevanotes

And it shall be our righteousness, if we observe to do all these commandments before the LORD our God, as he hath commanded us. (l) Because no one can fully obey the law, we must turn to Christ to be justified by faith.