We have been separated from the realm of Law, delivered from its dominion, liberated from its rule through our death with Christ. Our death in Christ has freed us from the Law. The explanation for this is given in vv. It has to be this way. We have to be freed from Law just as we were freed from sin because, under law, we were doomed to failure.
Law produces death.
In unbelievers and believers alike, the rule of Law breeds failure. And we have been. Now, Paul says, we serve in an entirely new way, the way of the Spirit. Let me summarize. Sin brings forth death.