Blessed is the man to whom the Lord will not impute sin. -Romans 4:8 

Is not the power and dominion of sin broken in you? Do you not feel that you cannot sin because you are born of God? Some sins which were masters of you once, do not trouble you now. I have known a man guilty of profane swearing, and from the moment of his conversion he has never had any difficulty in the matter. We have known a man snatched from drunkenness, and the cure by divine grace has been very wonderful and complete. We have known persons delivered from unclean living, and they have at once become chaste and pure, because Christ has smitten the old dragon such blows that he could not have power over them in that respect. The chosen seed sin and mourn it, but they are not slaves to sin; their heart goeth not after it; they have to say sometimes “the thing I do,” but they are wretched when it is so. They consent with their heart to the law of God that it is good, and they sigh and cry that they may be helped to obey it, for they are no longer under the slavery of sin; the serpent’s reigning power and dominion is broken in them.

It is broken in this way, that the guilt of sin is gone. The great power of the serpent lies in unpardoned sin. He cries “l have made you guilty: I brought you under the curse.” “No,” say we, “we are delivered from the curse and are now blessed, for it is written, ‘Blessed is the man whose transgression is forgiven, whose sin is covered.’ We are no longer guilty, for who shall lay anything to the charge of God’s elect? Since Christ hath justified, who is he that condemneth?” Here is a swinging blow for the old dragon’s head, such as he never will recover. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1326.cfm