The moral law was not abolished but fulfilled. Romans 7.
7What shall we say, then? Is the law sinful? Certainly not! Nevertheless, I would not have known what sin was had it not been for the law. For I would not have known what coveting really was if the law had not said, “You shall not covet.”b 8But sin, seizing the opportunity afforded by the commandment, produced in me every kind of coveting. For apart from the law, sin was dead. 9Once I was alive apart from the law; but when the commandment came, sin sprang to life and I died. 10I found that the very commandment that was intended to bring life actually brought death. 11For sin, seizing the opportunity afforded by the commandment, deceived me, and through the commandment put me to death. 12So then, the law is holy, and the commandment is holy, righteous and good.
13Did that which is good, then, become death to me? By no means! Nevertheless, in order that sin might be recognized as sin, it used what is good to bring about my death, so that through the commandment sin might become utterly sinful.
14We know that the law is spiritual; but I am unspiritual, sold as a slave to sin. 15I do not understand what I do. For what I want to do I do not do, but what I hate I do. 16And if I do what I do not want to do, I agree that the law is good. 17As it is, it is no longer I myself who do it, but it is sin living in me. 18For I know that good itself does not dwell in me, that is, in my sinful nature.c For I have the desire to do what is good, but I cannot carry it out. 19For I do not do the good I want to do, but the evil I do not want to do—this I keep on doing. 20Now if I do what I do not want to do, it is no longer I who do it, but it is sin living in me that does it.
21So I find this law at work: Although I want to do good, evil is right there with me. 22For in my inner being I delight in God’s law; 23but I see another law at work in me, waging war against the law of my mind and making me a prisoner of the law of sin at work within me. 24What a wretched man I am! Who will rescue me from this body that is subject to death? 25Thanks be to God, who delivers me through Jesus Christ our Lord!
So then, I myself in my mind am a slave to God’s law, but in my sinful nature a slave to the law of sin.
(continuing to Romans 8 )
1Therefore, there is now no condemnation for those who are in Christ Jesus, 2because through Christ Jesus the law of the Spirit who gives life has set you free from the law of sin and death. 3For what the law was powerless to do because it was weakened by the flesh,b God did by sending his own Son in the likeness of sinful flesh to be a sin offering.c And so he condemned sin in the flesh, 4in order that the righteous requirement of the law might be fully met in us, who do not live according to the flesh but according to the Spirit.
5Those who live according to the flesh have their minds set on what the flesh desires; but those who live in accordance with the Spirit have their minds set on what the Spirit desires. 6The mind governed by the flesh is death, but the mind governed by the Spirit is life and peace. 7The mind governed by the flesh is hostile to God; it does not submit to God’s law, nor can it do so. 8Those who are in the realm of the flesh cannot please God.
9You, however, are not in the realm of the flesh but are in the realm of the Spirit, if indeed the Spirit of God lives in you. And if anyone does not have the Spirit of Christ, they do not belong to Christ. 10But if Christ is in you, then even though your body is subject to death because of sin, the Spirit gives life because of righteousness. 11And if the Spirit of him who raised Jesus from the dead is living in you, he who raised Christ from the dead will also give life to your mortal bodies because of his Spirit who lives in you.
12Therefore, brothers and sisters, we have an obligation—but it is not to the flesh, to live according to it. 13For if you live according to the flesh, you will die; but if by the Spirit you put to death the misdeeds of the body, you will live.
There is no part of the moral law that we ignore, but we do not live by it, in so much that it holds sin over us. We follow the law by faith, but we grasp hold of grace for our salvation, knowing that if we hold onto the law for salvation all grace is lost and we are convicted and suffer death. The law of sin no longer has any power through the blood of the Lamb, but it is not ignored.
Christian salvation is utterly and entirely dependent on receiving grace with a repentant heart, through the blood of Christ. The law is not ignored, the heart realizing its error repents and accepts the free gift of grace through the Lamb. Without the law there is no repentance, and without Jesus there is no grace. The two are fundamentally and irrevocably linked, and with the Lamb of God they are finally fulfilled.
As Christians we have to hold to grace with both hands. If reach for anything else we will lose grace entirely. Some use grace as an excuse to fulfill all the evils of their heart. They are not under grace, because they do not have a repentant heart. Their heart seeks evil and they desire it wholly. Our hearts, our flesh rather, seeks evil, but we deny it, refuse it, abhor it, and repent of it when we ultimately fail. One cannot be under grace and willfully and wholly desire and reach for what is against the law.
So if you see Christians who say. “Oh I can continue to lie, steal and murder because I’m free” then they are not free. We follow the law because it is good and we will to do good through the Spirit. We no longer follow it because it condemns us to death, it has no hold over us. We follow it because we love it. We are now Free to follow the law, not a slave to it.