Deuteronomy 6:25

“And it shall be our righteousness, etc.] Or a mercy, benefit, and blessing to us; or this shall be reckoned our righteousness, and that by which we shall be justified: if we observe to do all these commandments before the Lord our God, as he hath commanded us; in order to have such a justifying righteousness, a man must keep all the commandments of God, not one excepted; and that perfectly, without the least breach of them in thought, word, or deed; and that before the Lord, in his sight, not as it may appear to a man himself, or to others, but as it appears to God, who sees the heart, and weighs all actions; and a man must keep them in the manner the Lord has commanded, even with all his…”

“The Israelites were at the point of quitting a normal, life for a fixed and settled abode in the midst of other nations; they were exchanging a condition of comparative poverty for great and goodly cities, houses and vineyards. There was therefore before them a double danger; (1) a God-forgetting worldliness, and (2) a false tolerance of the idolatries practiced by those about to become their neighbors. The former error Moses strives to guard against in the verses before us; the latter in Deuteronomy 7:1-11. Deuteronomy 6:13 The command “to swear by His Name” is not inconsistent with the Lord’s injunction Matthew 5:34, “Swear not at all.” Moses refers to legal swearing, our Lord to swearing…”

“It shall be our righteousness - Heb. Righteousness shall be to us. We shall be owned and pronounced by God to be righteous and holy persons, if we sincerely obey him, otherwise we shall be declared to be unrighteous and ungodly. Or, mercy shall be to us, or with us. For as the Hebrew word rendered righteousness is very often put for mercy, (as Psa 24:5, Psa 36:10, Psa 51:14; Pro 10:2, Pro 11:4; Dan 9:16) so this sense seems best to agree both with the scripture use of this phrase, (in which righteousness, seldom or never, but grace or mercy frequently, is said to be to us or with us) and with the foregoing verse and argument God, saith he, Deu 5:24, commanded these things for our good, that…”

“6:25 righteous when we obey: Obedience shows that one is already in a state of righteousness, a standing before God obtained by faith (see 24:13; Hab 2:4; Rom 1:17; 4:1-5; Gal 3:6-7; see also Gen 15:6; Eph 2:8-9). When other nations observed Israel’s commitment to the covenant, they could rightly conclude that Israel was righteous.”

“Deu 24:13; Lev 18:5; Psa 106:30, Psa 106:31, Psa 119:6; Pro 12:28; Eze 20:11; Luk 10:28, Luk 10:29; Rom 10:3, Rom 10:5, Rom 10:6; Gal 3:12; Jam 2:10 Next: Deuteronomy Chapter 7”

“"And righteousness will be to us, if we observe to do:" i.e., our righteousness will consist in the observance of the law; we shall be regarded and treated by God as righteous, if we are diligent in the observance of the law. "Before Jehovah" refers primarily, no doubt, to the expression, "to do all these commandments;" but, as we may see from Deu 24:13, this does not prevent the further reference to the "righteousness" also. This righteousness before Jehovah, it is true, is not really the gospel "righteousness of faith;" but there is no opposition between the two, as the righteousness mentioned here is not founded upon the outward (pharisaic) righteousness of works, but upon an earnest…”