Galatians 2:14

But I saw they were swerving from the true line of the gospel; so I said to Cephas in presence of them all, "If you live like the Gentiles and not like the Jews, though you are a Jew yourself, why do you oblige the Gentiles to become Jews?" ??15 We may be Jews by birth and not 'Gentile sinners,'

Matthew 18:15

If your brother sins [against you], go and reprove him, as between you and him alone. If he listens to you, then you have won your brother over;

1 Timothy 5:20

Those who are guilty of sin you must expose in public, to overawe the others.

Treasury of Scripture Knowledge

Summary

Open rebuke is better than secret love.

Bible References

General references

Matthew 18:15
If your brother sins [against you], go and reprove him, as between you and him alone. If he listens to you, then you have won your brother over;
Galatians 2:14
But I saw they were swerving from the true line of the gospel; so I said to Cephas in presence of them all, "If you live like the Gentiles and not like the Jews, though you are a Jew yourself, why do you oblige the Gentiles to become Jews?" ??15 We may be Jews by birth and not 'Gentile sinners,'
1 Timothy 5:20
Those who are guilty of sin you must expose in public, to overawe the others.