This word means to expose and convince a person of his sin. Reproof is the gentle, loving word of warning that tells the offender that someone knows and cares about the sin in his life. It suggests that someone is willing to take the risks involved in confrontation and to spend the time needed to help. The passage demands privacy. We should never take delight in the weaknesses of others or take delight in broadcasting all of the information at our disposal.
Confidentiality is crucial to the act of restoration.
The fewer people who know about it, the better. The passage seeks restoration. The goal of confrontation is restoration. The passage teaches alternatives. When confronted with their sin, persons might reject your help, might try to rationalize or justify their behavior, or might deny that they did anything wrong.