Paul's nature did change. At one point he even said he was 'very Christ'. He also said it is no longer I but Christ who lives. Christ does not live in His temple with a sin nature which brings captivity. He died to set us free from son. There is no such thing as an old nature in a new creature/true believer. At the new birth or at the point of salvation, we become a new creature; the old things passed away; behold, new things have come (2 Cor. 5:17). He or she becomes TOTALLY NEW.
The new nature (WE ARE PARTAKERS OF GOD'S DIVINE NATURE) replaces the old nature/sin nature. It is Christ's Nature. The New Creature is a totally transformed NEW MAN.
The dual nature doctrine is a false doctrine.
That is your opinion and you are welcome to it.
1 Tim. 1:15-16..............
Here is a trustworthy saying that deserves full acceptance: Christ Jesus came into the world to save sinners
of whom I am the worst. But for that very reason I was shown mercy so that in me, the worst of sinners, Christ Jesus might display his unlimited patience as an example for those who would believe on him and receive eternal life.
I believe that if you will consult
Youngs Literal Translation of the Holy Bible you will discover that in Romans 6, Paul used the
present tense verb as he created the same truth by using the
present tense in Romans 7:14-24. Both passages compliment the rest of Scripture because of Paul's present tense use of the verbs. He makes it clear that it was applicable to him at the time he wrote it. Now I realize that you will not like that but there is no way to change the Greek grammatical wording there. It is what it is my friend.
Paul used the present tense when calling himself a sinner. Surely that means that all the rest of us are sinners as well.
Now we can debate this back and forth as long as you want to but the truth is Christians are both sinners and saints.
It is a clear biblical truth that all are born in sin and all have a sin nature. Scripture says that God created humankind originally good and without a sin nature:
Gen. 1:26-27.............
"Then God said, ‘Let Us make man in Our image, according to Our likeness.’ . . . God created man in His own image, in the image of God He created him; male and female He created them”.
But then comes Genesis 3 and the fall of Adam and Eve, and with that fall sin entered into the two previously sinless creatures. And when they had children, their sin nature was passed along to their offspring. Thus, every human being is a sinner.
Saints, on the other hand, are not born saints; they become saints by being reborn. Because we have all “sinned and fallen short of the glory of God”; we are all in need of spiritual rebirth, without which we will continue in our sinful state throughout eternity. But God, in His great mercy and grace, has provided the (only) means for turning a sinner into a saint—the Lord Jesus Christ, who came “to give His life as a ransom for many.” When we confess our need for a Savior from sin and accept His sacrifice on the cross on our behalf, we become saints.Read more:
http://www.gotquestions.org/sinners-saints.html#ixzz3QyRE8dzN
Once we are saved by faith, however, we are called to certain actions befitting our calling as saints of God. “But just as he who called you is holy, so be holy in all you do; for it is written: ‘Be holy, because I am holy’” (
1 Peter 1:15–16).
Saints are not sinless, but the lives of saints do reflect the reality of the presence of Christ in our hearts, in whom we “live and move and have our being” (Acts 17:28).