Treasury of Scripture Knowledge
He who says words of protest to a man will later have more approval than one who says smooth words with his tongue.
Let there be no hate in your heart for your brother; but you may make a protest to your neighbour, so that he may be stopped from doing evil.
And if your brother does wrong to you, go, make clear to him his error between you and him in private: if he gives ear to you, you have got your brother back again.
But when I saw that they were not living uprightly in agreement with the true words of the good news, I said to Cephas before them all, If you, being a Jew, are living like the Gentiles, and not like the Jews, how will you make the Gentiles do the same as the Jews?
1 Timothy 5:20
Say sharp words to sinners when all are present, so that the rest may be in fear.