The wretch of Romans 7 is not a description of an individual whom is saved.
The wretch of Romans 7 is a description of an individual who is carnal and sold under sin, whom is under conviction, and whom knowing the law cannot find a means to be set free from the bondage he is under.
Read it carefully.
Paul is giving an illustration in order to teach that the law cannot set one free from sin. It is the Spirit of life in Jesus Christ which brings freedom.
Paul writes utilising the grammatical device of "Historical Present" to give a sense of vividness in the description of the wrest.
Here is some information...
Historical present - Wikipedia, the free encyclopedia
Rom 8:2 For
the law of the Spirit of life in Christ Jesus hath made me free from the law of sin and death.
The wretch has not been saved from the law of sin and death.
Rom 7:23 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.
The flesh will ALWAYS serve the law of sin which is why genuine Christians have done this...
Gal 5:24 And they that are Christ's
have crucified the flesh with the affections and lusts.
The old man has to die once and for all in repentance.
Rom 6:6 Knowing this, that
our old man is crucified with him, that the body of sin might be destroyed, that henceforth we should not serve sin.
Rom 6:7 For he that is dead is freed from sin.
It is only the dead (figuratively speaking) who are freed from sin. The self service of natural passions in disobedience to God has to be totally abandoned once and for all. This occurs in the Baptism of Repentance where the axe is laid to the root of sin. In doing this God responds with the Baptism of Fire by which we are raised unto newness of life and empowered to walk in righteousness whereby we abide faithfully in the Spirit of life in Jesus Christ.
Very carefully read this description written by Paul...
Rom 5:9 Much more then, being now justified by his blood, we shall be saved from wrath through him.
Rom 5:10 For if, when we were enemies, we were reconciled to God by the death of his Son, much more, being reconciled, we shall be saved by his life.
We are justified via the blood of Jesus when we enter into covenant with God with a true heart as described in Hebrews 10:19-22. Our hearts are purged of our previous crimes whereby we can now serve God in an acceptable manner having been granted a fresh start. We are then saved from that wrath of God THROUGH Jesus whereby we abide in the Spirit of His life, hence there is no condemnation upon those who are IN Jesus Christ who WALK after the Spirit.
Read very carefully...
Rom 8:6 For to be carnally minded is death; but to be spiritually minded is life and peace.
Rom 8:7 Because the carnal mind is enmity against God: for it is not subject to the law of God, neither indeed can be.
Rom 8:8 So then they that are in the flesh cannot please God.
Rom 8:9 But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his.
Rom 8:10 And if Christ be in you, the body is dead because of sin; but the Spirit is life because of righteousness.
Rom 8:11 But if the Spirit of him that raised up Jesus from the dead dwell in you, he that raised up Christ from the dead shall also quicken your mortal bodies by his Spirit that dwelleth in you.
Rom 8:12 Therefore, brethren, we are debtors, not to the flesh, to live after the flesh.
Rom 8:13 For 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.
Rom 8:14 For as many as are led by the Spirit of God, they are the sons of God.