Galatians 2:14

But when I saw that they were not living up to the truth of the good news, I said to Cephas, and that before them all, "If you are living like a heathen and not like a Jew, although you are a Jew yourself, why do you try to make the heathen live like Jews?"

Matthew 18:15

"Again, if your brother wrongs you, go and while alone with him show him the wrong. If he listens to you, you have won back your brother.

1 Timothy 5:20

Those who are guilty reprove in public, so that others may be warned.

Treasury of Scripture Knowledge

Summary

Open rebuke is better than secret love.

Bible References

General references

Matthew 18:15
"Again, if your brother wrongs you, go and while alone with him show him the wrong. If he listens to you, you have won back your brother.
Galatians 2:14
But when I saw that they were not living up to the truth of the good news, I said to Cephas, and that before them all, "If you are living like a heathen and not like a Jew, although you are a Jew yourself, why do you try to make the heathen live like Jews?"
1 Timothy 5:20
Those who are guilty reprove in public, so that others may be warned.