First, its not my method, its God's method, second, as long as I am steal occupying this cursed un-glorified body I will not be free from sin, however, the new man within me is free from sin. I have two natures, the old man with a natural desire to sin and the new man which I received when I was born-again, who has no sin. One day, either when I die or at Christ return, I will be given that new glorified body with-out sin. At that point I can say I have no sin, until then I must contend with that inner battle that Paul spoke in Rom. 7:19 For the good that I would I do not: but the evil which I would not, that I do. (verse 20) Now if I do that I would not, it is no more I that do it, but sin that dwelleth in me.
I thought that God's method included rebirth?
It also included the way to kill the old man-flesh, (Rom 6:3-6), with the affections and lusts. (Gal 5:24)
As fr your Romans 7 allusion...
The first few verses of Ro 7 clearly show that it is speaking of a former time. Verse 5..."For when we WERE in the flesh..."
The entire middle of Ro 7 is about Paul's former life as a Pharisee; trying to live the Mosaic Law, but failing. And again, a reference to the past in verse 18; (that is, in my flesh).
And the end, especially verse 23; "But I see another law in my members, warring against the law of my mind, and bringing me into captivity to
THE LAW OF SIN which is in my members."...points again to a former time. Because....
we read in Romans 8:2...."For the law of the Spirit of life in Christ Jesus hath made me free from
THE LAW OF SIN and death.
Why would Paul be subject to something he is free of?
If you could see the truth of Ro 7, and its proximity to Ro 6, which speaks of baptism and the death of the flesh, you would see that Paul is making the past-present transition, and Ro 8 continues on into the life walked in the Spirit.