The statement may be confusing to you because what I am saying is that in Christ the believer is perfect, but when walking in the flesh the believer is imperfect. Faith is what saves us. Our faith is not only in Christ paying for our sins for justification so we can be saved from wrath, but is also in being made a new perfected creation in Christ.
"Therefore,
if anyone is in Christ, the new creation has come:
a The old has gone, the new is here! 18All this is from God, who reconciled us to himself through Christ and gave us the ministry of reconciliation:
19that
God was reconciling the world to himself in Christ, not counting people’s sins against them. And he has committed to us the message of reconciliation.
20We are therefore Christ’s ambassadors, as though God were making his appeal through us. We implore you on Christ’s behalf: Be reconciled to God.
21God made him who had no sin to be sinb for us, so that in him we might become the righteousness of God" (2 Corinthians 5:17-21).
We are reconciled because we are made to be God's righteousness. Yet as you can see
the old has already gone and the new has already come. The reconciliation has occurred because we are already righteous.
"put on the new self, which in the likeness of God has been created in righteousness and holiness of the truth" (Ephesians 4:24).
A person puts on the new self by faith because if it is not by faith it is sin and not righteousness. "Everything that is not of faith is sin" (Romans 14:23).
"Or do you not know that all of us who have been baptized into Christ Jesus have been baptized into His death?
4Therefore we have been buried with Him through baptism into death, so that as Christ was raised from the dead through the glory of the Father, so we too might walk in newness of life.
5For if we have become united with Him in the likeness of His death, certainly we shall also be in the likeness of His resurrection" (Romans 6:4).
"put on the new self, which in the likeness of God has been created in righteousness and holiness of the truth" (Colossians 3:10).
"he saved us, not because of righteous things we had done, but because of his mercy. He saved us through the washing of rebirth and renewal by the Holy Spirit" (Titus 3:5).
What is this renewal? Not perfecting, but a continuous life from God, a continuous awakening from God. Rather than the same truth being stagnant it is alive renewed moment to moment, just as someone can read the same bible verse and get deeper and deeper meaning from it comparing new scriptures and continually getting new life from it for the word or God is living.
This renewal however is not one time or stagnant.
"Do not conform to the pattern of this world, but
be transformed by the renewing of your mind" (Romans 12:2).
In God's Spirit the believer is in a continuous state of perfection being renewed moment to moment which compels them to love, give, rejoice, obey, etc., verses out of God's Spirit in works is a stagnant state of being for it is set in doing for obedience, rather than obeying because Christ's love compels the person.
The believer vacillates between the Spirit and the flesh learning to submit to God more and more by faith (and God's will and beliefs) and less and less being in one's own will and beliefs as they learn to trust God fully in every area. The point is that in God's Spirit we are really having faith in God's faith regarding us. God created us to be with Him as perfected beings, not to have us as imperfect beings with Him. In the Holy Spirit God's faith is in us as we are meant to be, which is the truth of who we are if we by faith believe in God's truth. When out of His Spirit (walking in self will) people believe evil about themselves and thus do evil (for the unsaved this is true, but for the saved their sins have been removed). The truth is that if believers believed what God believed about them they would be perfect because they would act completely from His Spirit and thus always be doing His will for Him and not be doing their own will from their own beliefs about the world and self.
Salvation which is being saved from wrath and condemnation for one's sins. Justification is justice is served which occurs because Jesus paid for the penalty of our injustices (sins). Justification is necessary for salvation and occurs through faith in what God has done and faith in the results for us because of what God has done. We are justified by the blood of Jesus, not our own works.
"Since we have now been justified by his blood, how much more shall we be saved from God’s wrath through him!
10For if, while we were God’s enemies, we were reconciled to him through the death of his Son, how much more, having been reconciled, shall we be saved through his life!" (Romans 5:9-10).
We have already been justified by his blood. The future tense shown as saved is because the judgment has not already occurred. Nevertheless, because we are justified we are saved from the wrath and condemnation. This has nothing to do with works saving us later. The salvation is based on the justification only which is by faith.
"For it is by grace you have been saved, through faith--and this is not from yourselves, it is the gift of God" (Ephesians 2:8).
Saved past tense which I just explained the difference of why one is shall be and one is past tense.
Sanctification (being made holy) is nothing more than the believer learning to abide more and more in the Holy Spirit who teaches them along with the Father and Jesus to know the truth of God's life, love, holiness, purity, and truth. When we do God's will by faith and love because God's righteousness fills us with that faith and love to compel us (rather than doing it because we have to get saved) we are abiding in God which is the only way to produce fruit. The believers holiness is God's holiness.
"Remain in me, as I also remain in you. No branch can bear fruit by itself; it must remain in the vine. Neither can you bear fruit unless you remain in me" (John 15:4).
The fruit is righteous fruit and cannot be done by one's own self.
"But the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, 23 gentleness and self-control" (Galatians 5:22-23).
Bearing fruit comes from being in faith that allows us to rest in God so that He is the full determiner of our decisions. In this He fills our minds with His thoughts and even will give us words to speak when it is His will to do so. When we abide in God we are essentially acting as one body, His body, from His mind, heart, and Spirit. This is very different than doing works to get saved or justified.
Our new glorified bodies is a completely different subject that has nothing to do with works, so I am not sure why you brought it up but I am happy to discuss it with you if you want.