@ Maria Neves: The anti-scriptural & mind-controlling teachings of JW's continue unchallenged by the flock!
If JW's just sat down for 3 minutes and considered Matthew 18:15-17 - using their own thinking abilities - perhaps their hearts & minds might see for the first time that Jesus said absolutely nothing about elders being involved when someone commits a serious sin.
In fact, he explicitly stated that if a sin has been witnessed by someone, the matter should be resolved between the sinner and the witness. No one else was to be involved.
Jesus never said anything about Christians having to confess to elders. Verse 16 is referring to other witnesses of the sin - not witnesses of the accusation.
Matthew 18:17 & 1 Timothy 5:20 also show exactly who should be informed of an unrepentant member & their sin, as a warning for the whole congregation - not just elders.