John Gill Commentary Deuteronomy 31:5

"And Jehovah will deliver them up before you, and ye shall do unto them according unto all the commandment which I have commanded you." — Deuteronomy 31:5 (ASV)

And the Lord shall give them up before your face
To ruin and destruction; the Targum of Jonathan is, ``the Word of the Lord shall deliver them up:''
that you may do unto them according to all the commandments which I have commanded you ;
that is, utterly destroy them, make no covenant with them, enter into no alliances nor contract marriages with them; but demolish their altars, cut down their groves, and break their images in pieces; of which last Aben Ezra interprets the words; but they are not to be restrained to that single instance; see (Deuteronomy 7:1–5) .