When we have a problem against another Believer Jesus is very clear in these verses how it should be handled. Initially, it should be taken up “just between the two of you”. This does not mean blowing up Social Media with slanderous posts, or calling all your friends first to complain. It means going to that person in love and truth… exposing the wrong. It also means taking responsibly for your part and being accountable for any of your own sins. It’s when they refuse to listen or receive your concerns that you ask one or two other Believers to accompany you to speak with them again. Accepting the testimony only from two or three witnesses was first established way back in the Old Testament (Deuteronomy 17:6 & Deuteronomy 19:15)…for one witness isn’t enough to convict a man accused of any crime. (Sounds like the old he said, she said problem) The reason for bringing other people into the mix is not to gang up on the person but to confirm information and shed light on all areas…hopefully moving towards resolution and reconciliation.