Deuteronomy 8:20

20 As also the other nations which the Lord God destroys before your face, so shall ye perish, because ye hearkened not to the voice of the Lord your God.

Deuteronomy 8:20 Meaning and Commentary

Deuteronomy 8:20

As the nations which the Lord destroyeth before your face, so
shall ye perish
Be cut off by the sword, or cast out as they were, the same sins, particularly idolatry, being committed by them. This is to be understood of the seven nations of the land of Canaan, which the Lord would be gradually destroying when Israel came into the possession of their land; and they might righteously expect the same treatment, should they be guilty of the same sins:

because ye would not be obedient to the voice of the Lord your God;
expressed in his law, especially in the two first precepts of it, which require the worship of one God, and forbid the worshipping of idols; or to the Word of the Lord, as the Targum of Jonathan, Christ, the essential Word, in whom the name of the Lord was, and whose voice Israel was to obey, ( Exodus 23:20-22 ) .

Deuteronomy 8:20 In-Context

18 But thou shalt remember the Lord thy God, that he gives thee strength to get wealth; even that he may establish his covenant, which the Lord sware to thy fathers, as at this day.
19 And it shall come to pass if thou do at all forget the Lord thy God, and shouldest go after other gods, and serve them, and worship them, I call heaven and earth to witness against you this day, that ye shall surely perish.
20 As also the other nations which the Lord God destroys before your face, so shall ye perish, because ye hearkened not to the voice of the Lord your God.

The Brenton translation of the Septuagint is in the public domain.