I don’t understand your point. Of course a believer confesses his sins (with a humble heart to our sovereign God).
Are you thinking a regenerated man would attempt to hide his sin?
Are you thinking an unregenerated man would confess sin on his own accord? Or that by doing so by the prompting of others, rather from within his own heart, he might be saved?
Sad to say but true. I never met any until these threads. Very Wrong. Unhistorical Christianity. If you read the religion thread regularly you will see it more than you would think.
I just believe important to show from scripture.