Well i do not know how a man who has reached sinlessness (or as you put it perfectionism) preaches the gospel. I would assume he would says what Paul says about putting all things behind you and keep moving forward to the high calling of Christ
As for me, I preach the same gospel Paul taught ''Christ is us''
Some will tell you it is impossible to live a life of pure obedience to God without ever stumbling or sinning. However Jesus said though it may be impossible for men, all things are possible for God. Moreover He said that to us who believe all things are possible. Finally Paul wrote that God is not only able to do what we believe or think He can, but He can do exceedingly, abundantly more than we could ever even imagine. And how does God accomplish this? Though the Holy Spirit power that is already dwelling in us.
Matthew 19:26 But Jesus looked at them and said to them, “With men this is impossible, but with God all things are possible.”
Mark 9:23 Jesus said unto him, If thou canst believe, all things are possible to him that believeth.
Ephesians 3:20 Now unto him that is able to do exceeding abundantly above all that we ask or think, according to the power that worketh in us,
So if Jesus says we can, and Zone you mom, your pastor or anyone else says you can who are you going to believe Zone, or Jesus. Me? I believe Jesus
Thats right because the scripes righteousness were filthy rags, are righteousness is in Christ.
The first step to being perfected is to realize it is not us, but Christ is us and that we on our own would never be able to accomplish anything, only by the grace of God working is us and for us enables us to accomplish perfection. Even then it is not us, but the Holy Spirit working in us that accomplishes this, yet when we get to Heaven we get the credit. Good deal huh?
Philippians 3:3 For we are the circumcision, which worship God in the spirit, and rejoice in Christ Jesus, and have no confidence in the flesh.
My righteousness is in Christ...Are you claiming Christ is not righteous?