1 John 5:1 Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him.
1 John 5:4 For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, even our faith.
1 John 5:5 Who is he that overcometh the world, but he that believeth that Jesus is the Son of God?
Who is he that believeth?
1 John 5:10-12 He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son. And this is the record, that God hath given to us eternal life, and this life is in his Son. He that hath the Son hath life; and he that hath not the Son of God hath not life.
You either have the Son of God or you do not have the Son of God. Why?
1 John 5:12-13 He that hath the Son hath life; and he that hath not the Son of God hath not life. These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God.
Thereby having the Son and life.
1 John 5:18-20 We know that whosoever is born of God sinneth not; but he that is begotten of God keepeth himself, and that wicked one toucheth him not. And we know that we are of God, and the whole world lieth in wickedness. And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.
"Sinneth Not"? How is that possible? The Spirit of Christ in me cannot sin.
Now we can understand 1 John 1:8-10 If we say that we have no sin, we deceive ourselves, and the truth is not in us. If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness. If we say that we have not sinned, we make him a liar, and his word is not in us.
Who sins? Not the Christ that is born of God and is in me. I sin and when I do and confess my sin, why is God faithful and just to forgive me my sin? The Blood of Christ takes away my sin, that is why God is faithful and just to forgive and to cleanse from all unrighteousness. It is all of Jesus Christ and what He finished on the Cross.
This is why the Word of God divides the spirit and soul and body, that my spirit is perfect and cannot sin for it is the Spirit of Christ birthed in me. My soul/mind can still sin, that is why God is faithful and just to forgive and cleanse from all unrighteousness, which comes by my confession of my soul/mind sins, which become less and less daily as the continual cleansing, justly comes and forgives. The body is only quickened to contain the Spirit of Christ and the Holy Spirit that I may learn Christ by His Mind that is in me, the body still has to die from the sin of Adam and the curse of God in the Garden; "you shall surly die".
To finish; who was John speaking to and revealing to what he spoke to, heard speak, touched and looked upon? "To shew unto you that eternal life is in the Son.
1 John 1:1-2 That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, of the Word of life; (For the life was manifested, and we have seen it, and bear witness, and shew unto you that eternal life, which was with the Father, and was manifested unto us;)
I was lost in sin, I am forgiven in sin, but I am going on into perfection; Hebrews 6:1-3 Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God, Of the doctrine of baptisms, and of laying on of hands, and of resurrection of the dead, and of eternal judgment. And this will we do, if God permit.
In Christ: sinless by He that is in me and forgiven of sin by John's testimony "If we confess".