Grace and peace BBob,
I understand what you are saying for St. John clearly states:
He that commmitteth sin is of the devil: for the devil sinneth from the beginning. For this purpose, the Son of God appeared, that he might destroy the works of the devil. Whosoever is born of God, commmitteth not sin: for his seed abideth in him, and he can not sin, because he is born of God.
(I John 3:8-9)
But if we are to interpret this to mean that Christians don't sin or they're sin is simply not held against them then I wonder what the purpose was for St. John to say earlier:
My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous: And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.
(I John 2:1-2)
If we interpret these verses to mean that Christ has become 'the propitiation for our sins' we also have to affirm some kind of universalism because of the later line 'and not for ours only, but also for the sins of the whole world'... don't we?
Personally, I try to steer a course away from debates about Justification. Men's hearts are tricky and foolish and it is so very difficult to read them.