Proverbs 27:5
An open rebuke is better than unspoken love.
Proverbs 28:23
Whoever rebukes a man will later on find more favor than someone who flatters with his words.
Galatians 2:14
But when I saw that they were not acting consistently with the truth of the gospel, I told Cephas in front of everyone, "Though you are a Jew, you have been living like a gentile and not like a Jew. So how can you insist that the gentiles must live like Jews?"
Leviticus 19:17
"You are not to hate your relative in your heart. Rebuke your neighbor if you must, but you are not to incur guilt on account of him.
Matthew 18:15
"If your brother sins against you, go and confront him while the two of you are alone. If he listens to you, you have won back your brother.
1 Timothy 5:20
As for those who keep on sinning, rebuke them in front of everyone so that the rest will also be afraid.