Why?
Because the law is the standard that names sin. Sin has no authority apart from a command to rebel against, so the law becomes its “power” in the sense that it exposes, defines, and provokes sin on the basis of the fallen, human nature. When the command says “do not,” fallen nature hears a boundary and often pushes against it because of the fallenness of the flesh, thus the reason that same Paul spoke of the flesh being at war with the spirit.
The prohibition, by nature, is the reason sinful passions are “aroused” by the law in Romans 7:5: the law is good, but sin in us is not. The commandment confronts desire, and our corrupt nature turns that confrontation into stronger craving, guilt, and rebellion.
In Saul/Paul’s case, “You shall not covet” gave sin a target. The prohibition did not create covetousness; it activated awareness and resistance in a heart still governed by the flesh, so forbidden desire multiplied into “all manner of concupiscence.”
So the basic idea is: law is holy, sin is the parasite, and the law becomes the occasion sin exploits.
Does that help?
MM
Here’s Paul’s core gospel message in a nutshell:
The power of sin is the law 1Cor15:56 The legally binding law with the power to condemn.
But as Paul states, the law, what is written in it is holy, just and good (Rom7:12)
So what was God to do? He obviously would want to remove the power of sin, but he would not want to remove what is holy just and good.
Law as we naturally understand law to mean comes in two parts, what is written in the law and the attached penalty for transgression. Nothing wrong at all with the first part, it is holy, just and good, its the second part that's the problem
So God did an incredible thing. He transferred the law/what is written in it, from an external law engraved in stone, and made it an internal law in the hearts and minds of believers(2Cor3:3&Heb10:15-17)) An external law does not mean you in your heart would want to obey it does it. But a law placed in your heart, does mean in your heart you want to follow it. So, what is holy, just and good remains intact, it is now in your heart and mind. It simply means in your mind you know how God wants you to live and in your heart you want to live that way. In your heart you do not want to murder, steal, commit adultery, covet, take the Lords name in vain etc. Hardly legalism! The law/what is written in the law that is now in your heart and mind cannot condemn you, you have no righteousness of obeying it, for Jesus died for your sins/your transgressions of the law: your sins and lawless deeds I will remember no more
And so, law as we naturally understand law to mean is abolished for the believer. But what is holy, just and good is now in the hearts and minds of believers.
Because, and only because you in your heart want to live as God desires you to live, he removed the penalty attached to the law for transgression from your life. He sent Jesus to die for your sins/your transgressions of the law. Therefore, the legally binding law with the power to condemn is removed from you. And therefore, the power of sin is also now removed from your life.
With the power of sin removed from your life, you can now live a far holier life, a life you in your heart want to live for that is where the law now is. And you can do that because you are not under law/righteousness of obeying the law, but under grace/righteousness of faith in Christ. Christ died to pay the penalty of your sin, and he died to break the power of sin. And so Paul states:
Do we then make void the law by faith/righteousness of faith in Christ not obeying the law? God forbid: Yea, we establish the law Rom3:31
In other words, a righteousness of faith in Christ rather than obeying the law does not mean we can or will then act however we like, but rather, with the power of sin removed from us, we will live a holier life, that is in line with what is written in what is holy, just and good.
And:
For sin shall no longer be your master for you are not under law/ righteousness of obeying the law, but under grace/righteousness of faith in Christ. Rom 6:14