(CLV) Dt 6:25
So it shall come to be righteousness for us when we observe to do all this instruction before Yahweh our Elohim, just as He had enjoined on us.
It says above "
when we observe to do all this instruction"... But who has achieved this righteousness through the works of the law, and who has shown they are without sin except for the Christ? For sin was in mankind before the law was ever given.
13 For until the law sin was in the world: but sin is not imputed when there is no law.
1 Timothy 1:9,
Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers,
Romans 5:12,
Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:
Romans 15-18,
15 But not as the offence, so also is the free gift. For if through the offence of one many be dead, much more the grace of God, and the gift by grace, which is by one man, Jesus Christ, hath abounded unto many.
16 And not as it was by one that sinned, so is the gift: for the judgment was by one to condemnation, but the free gift is of many offences unto justification.
17 For if by one man's offence death reigned by one; much more they which receive abundance of grace and of the gift of righteousness shall reign in life by one, Jesus Christ.)
18 Therefore as by the offence of one judgment came upon all men to condemnation; even so by the righteousness of one the free gift came upon all men unto justification of life.
Galatians 2:21,
I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.
Galatians 3:21,
Is the law then against the promises of God? God forbid: for if there had been a law given which could have given life, verily righteousness should have been by the law.