Deuteronomy 13:18

18 When thou shalt hearken to the voice of the LORD thy God, to keep all his commandments which I command thee this day, to do [that which is] right in the eyes of the LORD thy God.

Deuteronomy 13:18 Meaning and Commentary

Deuteronomy 13:18

When thou shalt hearken to the voice of the Lord thy God
Not only in this case, but in all others:

to keep all his commandments which I command thee this day:
the repetition of which he made unto them, and enjoined the observance of them in the name of the Lord:

to do that which is right in the eyes of the Lord thy God;
which they would do, if they kept the commandments of the Lord, which are holy, just, and good, and must be right in his sight because commanded by him.

Deuteronomy 13:18 In-Context

16 And thou shalt gather all the spoil of it into the midst of its street, and shalt burn with fire the city, and all the spoil of it every whit, for the LORD thy God: and it shall be a heap forever; it shalt not be built again.

17 And there shall cleave naught of the cursed thing to thy hand: that the LORD may turn from the fierceness of his anger, and show thee mercy, and have compassion upon thee, and multiply thee, as he hath sworn to thy fathers;

18 When thou shalt hearken to the voice of the LORD thy God, to keep all his commandments which I command thee this day, to do [that which is] right in the eyes of the LORD thy God.