You don't need the Law when you live by faith that God is perfect, our desires were CHANGED we want to be like God. That is unless you love the world more than God. Sin nature is different from willful sinning. During the 1000 year reign, when Satan is locked up, there will be no willful sin, but there will still be sin nature, or men whoo sin by omission, only God is perfect, so not thinking about another persons needs might be a selfish sin of omission, but those living at that time will not go around willfully lusting, hating, etc. etc.
In the Holy Spirit, we do the same now, but Satan still can tempt us, so there is a continual battle, but via the holy spirit we can overcome the liar. Resist the devil and he will flee from you. I wonder if people have ever thought that through to its logical end? If I sat around talking to you every day, bugging you, and it agitated you, I would keep doing it if that is how I git my jollies. But the moment you ignored me for 24 hours straight, then a week straight, I would get tired of running my mouth and leave you be. That is what that verse means, if our hearts are set towards Jesus/God, then Satan will flee us, e may come back periodically with a grand scheme to make us fall. But if our hearts are set towards God/Jesus, the Law means nothing, we are justified by the Blood, not the Law.
I have been preaching this word might near 35 years brother. The Law is null and void, as a matter of fact it was never the Covenant, Abrahams Covenant was always THE PROMISE.