Deuteronomy 6:18

18 Do what the Lord says is good and right so that things will go well for you. Then you may go in and take the good land the Lord promised to your ancestors.

Deuteronomy 6:18 Meaning and Commentary

Deuteronomy 6:18

And thou shalt do that which is right and good in the sight of
the Lord
And what is such appears from the declaration of his mind and will in the commandments he has given, and obeying which is therefore doing what is right and good; for his commandment is holy, just, and good, being agreeable both to his nature and will, ( Romans 7:12 ) that it may be well with thee; as it is with those that fear God, and keep his commandments:

and that thou mayest go in and possess the good land which the Lord
sware unto thy fathers;
to give to them and to their posterity, even the land of Canaan; but if they did not what was right and good in the sight of God, they might expect to be kept out of it, as their immediate parents were, whose carcasses fell in the wilderness.

Deuteronomy 6:18 In-Context

16 Do not test the Lord your God as you did at Massah.

17 Be sure to obey the commands of the Lord your God and the rules and laws he has given you.

18 Do what the Lord says is good and right so that things will go well for you. Then you may go in and take the good land the Lord promised to your ancestors.

19 He will force all your enemies out as you go in, as the Lord has said.

20 In the future when your children ask you, "What is the meaning of the laws, commands, and rules the Lord our God gave us?"