Other than Paul's rebuke to Peter, some Bible verses:
Psa 141:5 Let the righteous smite me; it shall be a kindness: and let him reprove me; it shall be an excellent oil, which shall not break my head: for yet my prayer also shall be in their calamities.
Pro 27:5 Open rebuke is better than secret love.
2Ti 4:2 Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine.
1Ti 5:20 Them that sin rebuke before all, that others also may fear.