Proverbs 27:5
Better is open rebuke than hidden love.
Proverbs 28:23
Whoever rebukes a man will afterward find more favor than he who flatters with his tongue.
Galatians 2:14
But when I saw that their conduct was not in step with the truth of the gospel, I said to Cephas before them all, "If you, though a Jew, live like a Gentile and not like a Jew, how can you force the Gentiles to live like Jews?"
Leviticus 19:17
"You shall not hate your brother in your heart, but you shall reason frankly with your neighbor, lest you incur sin because of him.
Matthew 18:15
"If your brother sins against you, go and tell him his fault, between you and him alone. If he listens to you, you have gained your brother.
1 Timothy 5:20
As for those who persist in sin, rebuke them in the presence of all, so that the rest may stand in fear.