Galatians 2:14

But when I saw that they are not walking uprightly according to the truth of the gospel, I said to Cephas in the presence of all, If you being a Jew are living like the Gentiles and not like the Jews, how do you compel the Gentiles to judaize?

Matthew 18:15

But if thy brother may sin, go, and convict him between thee and him alone: if he may hear thee, thou hast gained thy brother:

1 Timothy 5:20

Convict those who sin before all, in order that the rest may also have fear.

Treasury of Scripture Knowledge

Summary

Open rebuke is better than secret love.

Bible References

General references

Matthew 18:15
But if thy brother may sin, go, and convict him between thee and him alone: if he may hear thee, thou hast gained thy brother:
Galatians 2:14
But when I saw that they are not walking uprightly according to the truth of the gospel, I said to Cephas in the presence of all, If you being a Jew are living like the Gentiles and not like the Jews, how do you compel the Gentiles to judaize?
1 Timothy 5:20
Convict those who sin before all, in order that the rest may also have fear.