17 You shall diligently keep the commandments of the Lord your God, His testimonies, and His statutes which He has commanded you. 18 And you shall do what is right and good in the sight of the Lord, that it may be well with you, and that you may go in and possess the good land of which the Lord swore to your fathers, 19 to cast out all your enemies from before you, as the Lord has spoken. 20 "When your son asks you in time to come, saying, 'What is the meaning of the testimonies, the statutes, and the judgments which the Lord our God has commanded you?' 21 then you shall say to your son: 'We were slaves of Pharaoh in Egypt, and the Lord brought us out of Egypt with a mighty hand; 22 and the Lord showed signs and wonders before our eyes, great and severe, against Egypt, Pharaoh, and all his household. 23 Then He brought us out from there, that He might bring us in, to give us the land of which He swore to our fathers. 24 And the Lord commanded us to observe all these statutes, to fear the Lord our God, for our good always, that He might preserve us alive, as it is this day. 25 Then it will be righteousness for us, if we are careful to observe all these commandments before the Lord our God, as He has commanded us.'

Matthew Henry's Commentary on Deuteronomy 6:17-25

Commentary on Deuteronomy 6:17-25

(Read Deuteronomy 6:17-25)

Moses gives charge to keep God's commandments. Negligence will ruin us; but we cannot be saved without diligence. It is our interest, as well as our duty, to be religious. It will be our life. Godliness has the promise of the continuance and comfort of the life that now is, as far as it is for God's glory. It will be our righteousness. It is only through the Mediator we can be righteous before God. The knowledge of the spirituality and excellency of the holy law of God, is suited to show sinful man his need of a Saviour, and to prepare his heart to welcome a free salvation. The gospel honours the law, not only in the perfect obedience of the Son of God, the Lord Jesus Christ; but in that it is a plan for bringing back apostate rebels and enemies, by repentance, faith, forgiveness, and renewing grace, to love God above all things, even in this world; and in the world above, to love him perfectly, even as angels love him.