(8.) He urges the certain advantage of obedience. This argument he begins with (v. 1): That you may live, and go in and possess the land; and this he concludes with (v. 40): That it may go well with thee, and with thy children after thee. He reminds them that they were upon their good behaviour, that their prosperity would depend upon their piety. If they kept God's precepts, he would undoubtedly fulfil his promises.
For this doctrine standeth not in bare knowledge, but in practice of life.
And judgments, regarding religion and civil affairs. (Calmet) — Live a happy life. (Menochius)
For this doctrine standeth not in bare knowledge, but in practice of life.
Verses 1-23 The power and love of God to Israel are here made the ground and reason of a number of cautions and serious warnings; and although there is much reference to their national covenant, yet all may be applied to those who live under the gospel. What are laws made for but to be observed and obeyed? Our obedience as individuals cannot merit salvation; but it is the only evidence that we are partakers of the gift of God, which is eternal life through Jesus Christ, Considering how many temptations we are compassed with, and what corrupt desires we have in our bosoms, we have great need to keep our hearts with all diligence. Those cannot walk aright, who walk carelessly. Moses charges particularly to take heed of the sin of idolatry. He shows how weak the temptation would be to those who thought aright; for these pretended gods, the sun, moon, and stars, were only blessings which the Lord their God had imparted to all nations. It is absurd to worship them; shall we serve those that were made to serve us? Take heed lest ye forget the covenant of the Lord your God. We must take heed lest at any time we forget our religion. Care, caution, and watchfulness, are helps against a bad memory.
(3.) He charges them to keep God's commandments (v. 2), to do them (v. 5, 14), to keep and do them (v. 6), to perform the covenant, v. 13. Hearing must be in order to doing, knowledge in order to practice. God's commandments were the way they must keep in, the rule they must keep to; they must govern themselves by the moral precepts, perform their devotion according to the divine ritual, and administer justice according to the judicial law. He concludes his discourse (v. 40) with this repeated charge: Thou shalt keep his statutes and his commandments which I command thee. What are laws made for but to be observed and obeyed?
Cross references: : Deut. 12:32 Think not to be more wise than I am. God will not be served by halves, but will have full obedience.
Add any thing repugnant to the spirit of my law. No interpretation of this kind can be admitted. But this does not condemn well authorized traditions, and laws enacted by lawful superiors. The Jews always boast of their close adherence to the letter of the law, but they often forget the spirit of it, and by their traditions render it deformed, like a carcass. Demosthenes takes notice, that the Locrians had such a regard for their laws, that if any one chose to propose any fresh ones, he came with a rope about his neck, that if they did not meet with the approbation of the people, he might be strangled immediately. (Calmet) — Moses cannot mean to forbid any more divine or civil commandments being written by Josue and the subsequent prophets. He only enjoins that nothing shall be altered by human authority. The other books of the Old Testament serve to explain the law; and so do the apostolical traditions (Worthington) afford great assistance to understand the true meaning of all the Scriptures, and hence we learn whatever we have to perform, without danger of being led astray. (Haydock) — To these the Scriptures frequently refer. He that heareth you, heareth me, Luke x. Hold the traditions which you have learnt, 2 Thessalonians ii. The rest I will set in order, when I come, 1 Corinthians xi. 34. Hence St. Augustine (contra Cresc. i. 33) observes, “Though no evident example can be produced from Scripture, yet we hold the truth of the same Scripture, when we do what meets with the approbation of that Church whose authority the Scripture establishes.” See ep. 80, St. Chrysostom in 1 Thess. iv.; St. Irenĉus, Against Heresies iii. 4. (Worthington) — The Jews themselves never had the folly to imagine with the modern innovators, that all laws both of a religous or civil nature were here proscribed. Under David, Mardocheus, and the Machabees, various laws and feasts were commanded, and observed in the true spirit of the law, 1 Kings xxx. 25., and Esther ix., and 1 Machabees iv. God does not leave to the discretion of the Jews, the appointing of different victims, &c., in his worship, (chap. xii. 30,) as they might very easily give way to the superstitious observances of their neighbours, and these things had been sufficiently determined. But he enjoins all to obey the declarations of the priests and judges, chap. xvii. 10. (Bellarmine) (Tirinus) — Thus when the Apocalypse records a prohibition similar to this, (Apocalypse xxii. 18, 19,) it is not intended to seal up the divine volume, so that nothing more shall be admitted into it, for St. John wrote his gospel afterwards. But it must be explained in the same sense as this passage, and condemns all those who, of their own authority, would set up fresh doctrine in opposition to the word of God. Let Protestants consider if they be not concerned in this caution, when they not only cut off whole books of Scripture, but deny the authority of the Church itself, without which the Scripture can be of little service. They are the book sealed with seven seals, impenetrable to man without the aid of the divine author; (Apocalypse v. 5,) and this aid he will never grant to those who obstinately refuse to hear the Church, Matthew xviii. 17., and 2 Peter i. 20. (Haydock)