Afternoon Jason, I hope you are finding them golden fleas.
I don't read the King Jimmy much, and the ASV (1901) runs that quite differently. Actually neither "law" nor "the law" occurs in that verse. And the KJV gives a poor translation here.
Πᾶς ὁ ποιῶν τὴν ἁμαρτίαν καὶ τὴν ἀνομίαν ποιεῖ, καὶ ἡ ἁμαρτία ἐστὶν ἡ ἀνομία.
Every one that doeth sin doeth also lawlessness; and sin is lawlessness. (ASV).
Πᾶς ὁ ποιῶν τὴν ἁμαρτίαν = Everyone doing (the) sin
καὶ τὴν ἀνομίαν ποιεῖ = also (the) lawlessness does.
καὶ ἡ ἁμαρτία ἐστὶν ἡ ἀνομία. = and (the) sin is (the) lawlessness.
It seems to me when the topic is flubbing at the Christian life by being a legalist,
the problem is not specifically limited to the Law of Moses. It could be the law in the conscience, the Teachings of Jesus, or the commandments in the epistles to the Church. It is wrong to accept the Law of Moses as one's standard of conduct; it ended at the cross. It is also wrong to not obey the commandments given us by the Lord. And some of the Law of Moses is of universal application (like Love God, & Love neighbor).
ἀνομία is a sin, rejecting whatever standards the Lord has given us to obey, rejecting the Lordship of Christ.
a = not; nom- = root for law.
Having said that, no commandment has the power to cause obedience; it is like a sign that says "Don't spit here," on its own.
The primary source of standards for Christians is in Acts & the Epistles. Even the Teachings of Jesus & much of the gospels were given under the Law & in the context of the Kingdom announcement (Repent for the KoG is at hand.) Will you only own 1 coat? Will you follow the missionary rules of Mat 10?
But so far as Romans 7 is concerned, the specific command is "Thou shalt not lust/covet," which is still valid today. To me the argument in Rom 7 has nothing to do with the dispensational Law of Moses.