Jesus says something different….
Matthew 7:23 And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness!’
Whether you are intentionally doing this or not, this error needs to be corrected.
Lawlessness is, yes, a general term, there is no necessary connection to the Law of Moses - you are reading such a connection in to support your position.
One can certainly be lawless in all sorts of ways that have nothing whatsoever to do with the Law of Moses. If Jesus had said "I
never knew you; depart from me, you who break the Law", then, and only then would you have an argument here.
Paul says something different…
Romans 7:8 Because the carnal mind is enmity against God; for it is not subject to the law of God, nor indeed can be.
This is not Romans 7:8, it is Romans 8:7. But, in any event, you are not accounting for the broader context. Yes, if you take this verse out of context, there is a strong implication that those who are not "carnal" are indeed empowered to follow the Law.
But we know, beyond any doubt from Romans 7 that Paul cannot mean this:
But now we have been released from the Law, having died to that by which we were bound, so that we serve in newness of the [h]Spirit and not in oldness of the letter.
Whatever Paul means in Romans 8:7, it cannot be that we are still in any way under the Law.
Although you will likely deny this, a neutral evaluation of Romans 7 and the first part of 8 reveals Paul's thinking: the Law enslaves the Jew - it energizes sinful impulses within him. But later in chapter 7, Paul echoes what he writes in 7:6 about being set free from the Law:
Wretched man that I am! Who will set me free from [y]the body of this death? 25 Thanks be to God through Jesus Christ our Lord! So then, on the one hand I myself with my mind am serving the law of God, but on the other, with my flesh the law of sin
Although you guys always muddle this up, Paul is acknowledging that while the Law itself is good - he delights in it in his mind - it nevertheless enslaves him to sin.
This is beyond clear from the text of Romans 7 but you will almost certainly refuse to take Paul at his word as it undermines your position.
So when we get to Romans 8:7, we know that Paul is
reflecting on the state of his contemporaries - Jews who, as he was before conversion, are enslaved to sin by the action of the Law. These Jews are "stuck" in their struggle - they try to obey the Law, but they cannot.
What Paul is saying has nothing whatsoever to do with the notion that believers are somehow empowered to obey the Law. How could he be saying this - he has just told us in Romans 7:6 that we are entirely set free from the Law.