Here we are told to “reprove” (3198) and told not to reprove, all in the same verse. Others might contrast the words of Jesus to “judge not” and the words of Paul,
(2 Timothy 4:2 KJV) Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine.This is another one of those times when we are reminded that as Christians we cannot turn off our minds and go on auto-pilot. Thinking with discernment is always in order and sometimes necessary. It is clear that at times we are expected to correct our brothers in the faith. As parents we are expected to train our children. As citizens of a republic we are expected to raise our voice when the king is naked.
It is not easy. It will not always we clear.
So? How do we know when and where? Two necessary perquisites. We must be listening to the voice of the Holy Spirit. And before we can listen we need to take vocabulary lessons by reading the text book. Think of it as a quiz with questions that are always fair. If you have studied you don’t need to worry about your grade.