Hmmm, Romans 8:3-4 huh?
Rom 8:3 For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh:
So the Law could not forgive sin? OK, no problem. What was the problem with the Law? The flesh was weak. OK, got that.
Rom 8:4 That the righteousness of the law might be fulfilled in us, who walk not after the flesh, but after the Spirit.
The righteousness of the law is fulfilled in us? OK, so how does that equate to the Law being done away in direct contradiction to Christ's plain statement...
Mat 5:17 Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.
Mat 5:18 For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
Mat 5:19 Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
Gal 5:14 For all the law is fulfilled in one word, even in this; Thou shalt love thy neighbour as thyself.
Gal 5:15 But if ye bite and devour one another, take heed that ye be not consumed one of another.
Gal 5:16 This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh.
Gal 5:17 For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.
Gal 5:18 But if ye be led of the Spirit, ye are not under the law.
Yet Paul wrote this...
Rom 13:8 Owe no man any thing, but to love one another: for he that loveth another hath fulfilled the law.
Rom 13:9 For this, Thou shalt not commit adultery, Thou shalt not kill, Thou shalt not steal, Thou shalt not bear false witness, Thou shalt not covet; and if there be any other commandment, it is briefly comprehended in this saying, namely, Thou shalt love thy neighbour as thyself.
In the which he summarizes the Law of love thy neighbor as being the fulfillment of KEEPING the last six Commandments.
Right now are you under the civil law of murder? I woudl assume not, you are not under the law of murder unless you commit murder. I have never killed anyone, so I am not under the law concerning murder. If I kill someone today, it won't take long for me to realize I am now under the law of murder. Since the state I live in has no death penalty, I'll probably rot in prison.
Being under the Law menas you are subject to the Law and it's penalty. Christ paid that penalty for you and me. Example...
A man kills his boss. He is caught tried and found guilty. At the sentencing phase of the proceedings, the judge sentences Him to death. A nice person steps up and says "I know this man is guilty, I know he deserves the death penalty, but I will take it for him." And he does, you are now free to go because this nice person died in your stead. What does that do to the law against murder? Does that do away with the law? Does that make you free to go out and kill your next five bosses? Of course not. Need I explain the analogy above? We are not subject to the Law because Christ died to satisfy this...
Rom 6:23 For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.
Now, first of all, what is sin?
Rom 7:7 What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet.
1Jn 3:4 Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
What puts us under the death penalty?
Rom 7:11 For sin, taking occasion by the commandment, deceived me, and by it slew me.
Rom 7:12 Wherefore the law is holy, and the commandment holy, and just, and good.
Rom 7:13 Was then that which is good made death unto me? God forbid. But sin, that it might appear sin, working death in me by that which is good; that sin by the commandment might become exceeding sinful.
The answer to sin is not doing away with the Law, that is anarchy. The answer is repentance and forgiveness...
Act 2:38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
Our sins are remitted by repenting, being baptized and receiving the Holy Spirit as a consequence.
So what happens when we go back to a life of sin (transgressing God's Law)?
Heb 6:4 For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost,
Heb 6:5 And have tasted the good word of God, and the powers of the world to come,
Heb 6:6 If they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame.
Heb 6:7 For the earth which drinketh in the rain that cometh oft upon it, and bringeth forth herbs meet for them by whom it is dressed, receiveth blessing from God:
Heb 6:8 But that which beareth thorns and briers is rejected, and is nigh unto cursing; whose end is to be burned.
Heb 10:26 For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
Heb 10:27 But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.
Heb 10:28 He that despised Moses' law died without mercy under two or three witnesses:
Heb 10:29 Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?
Heb 10:30 For we know him that hath said, Vengeance belongeth unto me, I will recompense, saith the Lord. And again, The Lord shall judge his people.
Heb 10:31 It is a fearful thing to fall into the hands of the living God.
God's wonderful grace, the free, unearned pardon for breaking His Law is not license to continue...
Rom 6:1 What shall we say then? Shall we continue in sin, that grace may abound?
Rom 6:2 God forbid. How shall we, that are dead to sin, live any longer therein?
Jud 1:4 For there are certain men crept in unawares, who were before of old ordained to this condemnation, ungodly men, turning the grace of our God into lasciviousness, and denying the only Lord God, and our Lord Jesus Christ.
Rom 6:14 For sin shall not have dominion over you: for ye are not under the law, but under grace.
Rom 6:15 What then? shall we sin, because we are not under the law, but under grace? God forbid.
Rom 6:16 Know ye not, that to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey; whether of sin unto death, or of obedience unto righteousness?
How does Paul feel about the Commandments?
1Co 7:19 Circumcision is nothing, and uncircumcision is nothing, but the keeping of the commandments of God.
Grace is not anarchy, it is the free, unearned, undeserved forgiveness for transgressing the Law, not the doing away with the Law.
Here is what it means to be free from the Law...
Rom 8:2 For the law of the Spirit of life in Christ Jesus hath made me free from the law of sin and death.