Romans 12:17

17 Do not repay anyone evil for evil. Be careful to do what is right in the eyes of everyone.

Read Romans 12:17 Using Other Translations

Recompense to no man evil for evil. Provide things honest in the sight of all men.
Repay no one evil for evil, but give thought to do what is honorable in the sight of all.
Never pay back evil with more evil. Do things in such a way that everyone can see you are honorable.