Hi chopper,
You said that Paul was not able to resist his indwelling sin nature, yet he says in another passage that he beats his body into submission.
26 I therefore so run, not as uncertainly; so fight I, not as one that beateth the air:
27 But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway.
(1Co 9:26-27 KJV)
I would submit that Paul is explaining life under the Mosaic Law in this section. In chapter 7 Paul is addressing Jewish believers, he says for I speak to those who know the Law. He contrasts the Law of God (Mosaic) vs faith in Christ in chapter 8. He also speaks of "another law" in chapter 7 which I believe is a reference to sin.
Galatians 2:20
20 I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.
Who is the I who does the work?
IMHO. If I read the Law it is often about the I / me / we / people, but in the NT it tells how we get it done. The credit goes to God in the NT. The born again person has the mind of Christ available to strive against the flesh by the Holy Spirit. The old carnal mind now sees the kingdom. The desperately wicked heart is forgiven by the sacrifice that Jesus made.
So yes we are involved, but he works in us to get things done. It may seem like a bunch of double talk, but when you talk to a dual nature you have talk to the mind and talk to the flesh. You have scriptures directed to the mind and scriptures directed toward the flesh. On the last day the flesh will be changed (carnal flesh does no go directly into eternity, but is changed in a moment).
It is complex beyond belief, but with the OPs concept of the complex nature of man, we see a little clearer. God is complex and IMHO we are made in his image (complex ourselves).
The love of God (IMHO ) is complex too. Jude 21,22,23 Compassion is shown in OT and NT. Fear is shown in OT and NT. Jesus approached Peter in a positive and an honest negative way (my words). There are compassion statements, and fear type passages.
When we read through scripture (IMHO) we should divide the word and apply it to the appropriate area.
Individuals can have a particular area, but then a general balance (not lukewarm) is needed too.
Then what can a jerk from Mississippi know.
eddif