I know I reply kind of like I have an answer to everything (and I don't)! Online Bible study and/or "quasi-debate" is a way I like to learn. Sometimes I might post something while not being fully convinced...just to get a reply (or opposing view)...to try to clear things up on what I really believe (what the Bible actually says)!
A couple things come to mind related to why I started this thread:
1. If Paul's "I" really was "a Jew" without Christ and under the law, the rest of Romans reads differently. If this is what it was...I have to make some serious life-changes (because of what the Bible really teaches)! It would be easier for me to think, "Ooops, I messed up again because I still have that "sinful nature" inside of me...and always will."
Something similar came up in my live when I went to AA (I am a former alcoholic). AA teaches, "Once an alcoholic, always an alcoholic" and that alcoholism is a disease that you will always "have" even if you never drink again in your life. They say it is in your DNA. I believe that medical science has shown that some people do, in fact, have a genetic predisposition toward becoming alcoholics...my family qualifies me as in this category.
I strongly disagree with AA that I am still an alcoholic, much in the same way I disagree that I still have a "sinful nature" inside of my body (relating this to the thread and what some other Christians believe).
I may have a higher than average propensity toward drinking but I don't have an "alcoholic nature" as an indwelling enemy of my soul! Being that I have a fleshly human body, I had a propensity toward sin before becoming a Christian; a propensity that won almost all of the time. I still have the same body but am not convinced the Bible teaches that Christians have a propensity to sin. We are new creations in Christ.
(Gal 5, NKJV) 6 I say then: Walk in the Spirit, and you shall not fulfill the lust of the flesh. 17 For the flesh lusts against the Spirit, and the Spirit against the flesh; and these are contrary to one another, so that you do not do the things that you wish. 18 But if you are led by the Spirit, you are not under the law.
Paul tells us that, as Christians, our propensity is toward being led by the Spirit! Some versions translate verse 17b as "...so you cannot do the things you want." I take Paul's "you" as meaning a person on their own without the guidance of the Holy Spirit.
The Spirit inside us lusts (has very strong passion) against the flesh! (Has anyone heard a sermon on this...in their whole life?)...I haven't.....
It seems to me that folks who believe we still have a lurking "sinful nature" inside of us are not only incorrect about that, but miss the overall positive direction that all of these texts we have been studying point to! Our propensity is toward righteousness and our "nature" is a new nature in Christ!
Sean has alluded to the "victory over sin" passages (Amen!).
If Paul taught we have a "sinful nature" till we die...I have an excuse. Flip Wilson, the comdian, used to say, "The devil made me do it!" Those who think the Bible teaches we have a post-salvation "sinful nature" in us are in effect saying, "The flesh made me do it!"
My only excuse before the Lord when I sin is that my heart wasn't right; my thoughts got off of Christ; I sowed to the flesh (not my "sinful nature" that roars around inside me like a lion seeking to devour me)! I pretty well much believe this is what the Bible teaches...though I could be wrong (prove it!), lol

2. Most folks who hold to the "ongoing sinful nature" are either dichotomists or trichotomists (Christian Anthropology, "the doctrine of man"). Dichotmoists believe we have "two parts"...our bodies and our souls/spirits (the latter are about the same things). Trichomists believe we have "three parts"...bodies, souls, and spirits.
I hold to the Holistic view that sees us as "being one whole person." It is compatible with how the Jews of the Bible days saw things. We don't "have" a soul, imo: we are one. I don't want to go off into this far here but it has bearing on how people see the Bible...and Romans 7.
The Arminians I know who hold to either a dichotomist or trichotomist view tend to teach and preach in ways that I kind of see as "human effort"...they emphasize that we also have a "sinful nature" in us (most of them believe we do): They teach that when we sin it is due to being inherently bent to sin due to it.
I notice this often in Arminian churches I attend. You hear a lot about that how we always have to "overcome our flesh" and stuff like that. Along these lines, and others, I do not consider myself an Arminain.
Why not?
Because the emphasis is negative and based on human performance -- as opposed to -- what I think the Bible really teaches, emphasizing positive obedience (on the basis of a new nature)! I usually go to Arminian churches and some of the preachers are really good. But without fail it seems like there will be a "scolding" of some sort toward the end. I don't hold this against them...they think we still have a "lurking sinful nature" inside of us and that Romans 7 describes a normative Christian experience re: when we sin.
I don't know how to describe it but what Christ has done for us is so positive and so "there" that well, you just don't hear enuf of it! After I've worked hard all week long I don't like go to church only to hear about what a "wretched man" I am. Why not? Because in Christ I am NOT that guy any more! and no longer have a sinful nature! That "Rick" is GONE!
Praise GOD!
Ok, I better get goin, Thanks

Rick