Romans 7 is often used as support for that we can have our sins and our salvation too, but we must consider ALL of Romans 7 and particularly Romans 6 and 8. Paul ends chapter 7 by telling us about the SOLUTION to his problem:
Rom. 7:224O wretched man that I am! who shall deliver me from the body of this death? 25I thank God through Jesus Christ our Lord. So then with the mind I myself serve the law of God; but with the flesh the law of sin.
He also says:
Rom. 6:18Being then made free from sin, ye became the servants of righteousness.19I speak after the manner of men because of the infirmity of your flesh: for as ye have yielded your members servants to uncleanness and to iniquity unto iniquity; even so now yield your members servants to righteousness unto holiness.20For when ye were the servants of sin, ye were free from righteousness. 21What fruit had ye then in those things whereof ye are now ashamed? for the end of those things is DEATH. 22But now being made free from sin, and become servants to God, ye have your fruit unto holiness, and the end everlasting life
Rom. 8:1There is therefore now no condemnation to them which are in Christ Jesus, who WALK not after the flesh, but after the Spirit.2For the law of the Spirit of life in Christ Jesus hath made me free from the law of sin and death.
1 Cor. 3:3 For ye are yet carnal: for whereas there is among you envying, and strife, and divisions, are ye not carnal, and walk as men? 4 For while one saith, I am of Paul; and another, I am of Apollos; are ye not carnal?
We can all see a distinction between these two claims coming from the same man – PAUL:
Rom. 7:14 — but I am carnal, sold under sin.
Rom. 8:6 For to be carnally minded is death; (but to be spiritually minded is life and peace. 7 Because the carnal mind is enmity against God: for it is not subject to the law of God, neither indeed can be.)
Clearly Paul couldn’t be both carnal and NOT carnal at the same time. If we are sold under sin we are NOT spiritually alive but spiritually dead. Paul said that as a converted man he lived with a good conscience void of offense
Acts 23:1And Paul, earnestly beholding the council, said, Men and brethren, I have lived in all good conscience before God until this day.
Acts 24: 16And herein do I exercise myself, to have always a conscience void to offence toward God, and toward men.
2 Tim. 1:3I thank God, whom I serve from my forefathers with pure conscience, that without ceasing I have remembrance of thee in my prayers night and day;
The description in Romans 7 is not of the converted life of Paul, but a narration describing what happens when an unconverted sinner’s mind encounters the law of God and is convicted by it.
What does Paul mean with ”perfection?
Php. 3:12Not as though I had already attained, either were already perfect: but I follow after, if that I may apprehend that for which also I am apprehended of Christ Jesus.
Paul was talking about being free from physical corruption and attaining physical perfection, so not the same as MORAL perfection.The verses right before make it clear that he is talking about the resurrection and our new glorified bodies which will not be corrupted:
Php. 3: 10That I may know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto his death; 11If by any means I might attain unto the resurrection of the dead.
Paul was certainly not saying that moral perfection is unattainable in this life since he continues to say that many have already attained perfection:
Phil. 3:14I press toward the mark for the prize of the high calling of God in Christ Jesus. 15Let us therefore, as many as be perfect, be thus minded: and if in any thing ye be otherwise minded, God shall reveal even this unto you. 16Nevertheless, whereto we have already attained, let us walk by the same rule, let us mind the same thing. 17Brethren, be followers together of me, and mark them which walk so as ye have us for an ensample.).
Rom. 8:12Therefore, brethren, we are debtors, not to the flesh, to live after the flesh. 13For if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live. 14For as many as are led by the Spirit of God, they are the sons of God. 15For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father.
1 Cor. 9:27But 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.
Not even Jesus was ”perfected” until he was resurrected:
Luke 13:32 And he said unto them, Go ye, and tell that fox, Behold, I cast out devils, and I do cures to day and to morrow, and the third day I shall be perfected.