To be honest mate I have read it and don't get it.
I don't get Romans 7 where Paul talks about sin residing in the flesh and it's not him sinning.
I don't get the new nature.
I know in Romans that the nature in one Bible is translated as flesh (sarx) but in another its nature.
I think when Jesus said go sin no more then I agree with you.
Every genuine beliver will not want to sin.
And when they do they hold their hands up before God. Confess it.
As you have said, it's relational.
Romans 8 deals with overcoming the power of the Old nature.
God gave us a new nature to walk in, not so that we can walk in the old nature
Let me make my position very clear. I am not teaching sinless perfection. I am not saying that the fact that we sin means we're not saved. What I AM saying is that, and I am going to make a RARE prescriptive statement here, WE ARE TO WALK AFTER THE NEW NATURE, NOT THE OLD NATURE.
Do we fall into the habits of the old nature in Romans 7? Sure. Are we supposed to camp out there and let it rule over us. NO.
If you live after the flesh, you will die, but if you put to death the deeds of the flesh, you shall live. Romans 8:13
Practicing sin means living, dwelling, walking, abiding in, persisting in, the old nature. We as believers must not do this.
We may for a season, I admit I have more than once.
But DO WE REMAIN THERE?
John says NO for a true believer.