Hi mailmandan,
Most of those I've heard that teach like this, will never answer that question. Or if they do, they will always insert some ambiguity. I did know a fellow on a forum many years ago who came right out and said that he never sinned. But anyone reading his posts knew that was not true.
We really do put ourselves on display in our postings. And I've not read anyone here who's claims, or suggestions of sinlessness that I believe. I mean, I can see what they write!
Out of the abundance of the heart the mouth speaks, and post after post of accusation and dishonest inneundo, blatant misrepresentation, I continue to see these displayed so often in those who either claim, or just act as if it's true, that they've reached some sort of sinless state.
I know sanctification is real, but it is in faith in Christ that our lives are sanctified, the same faith by which we are saved.
Counter their claims with Scripture, and get a dose of their true temperment!
No, typically, at least what I've seen, is that someone will post over and over as if they are above everyone else, theologically, spiritually, some even think that they should be ruling over us, approving who is and who is not OK with God. And then continue to display such nonsense in their posts.
No, the more someone acts like that, the more they reveal that they are not progressed in Love, and that's the heart. Think what you think, know what you know, but without love, it's nothing!
James 3:13 "Who is a wise man and endued with knowledge among you? let him shew out of a good conversation his works with meekness of wisdom."
Much love!