Well, since:
1. I was Baptiszed in to Christ (1 Corinthians 12:13; Col. 2:11, 12; Ephesians 4:5) by the Holy Spirit when I first trusted in Christ (also Ephesians 1:13, sealed in Christ);
2. All my sins were paid for, propitiated at the Cross with one sufficient sacrifice forever (Hebrews chapters 9 and 10; etc.)
3. My soul is already permenantly saved and I have the witness of the Holy Ghost concerning that (Romans 8:16; 1 John 5:10; etc. . . . .
. . . if the purposes of (whatever) church (you are referring to) are as you state, then, all of those functions having already been finished, you have convinced me that I have no need of it.
Counterscriptural nonsense. Re-read these passages:
For the Spirit himself giveth testimony to our spirit, that we are the sons of God. (Romans 8:16)He that believeth in the Son of God, hath the testimony of God in himself. He that believeth not the Son, maketh him a liar: because he believeth not in the testimony which God hath testified of his Son. (1 John 5:10)
If you have no need of forgiveness of sin, why did Christ authorize the Church to forgive sins (John 20:23)