Contemplating revenge

Romans 12:17-19

Do not repay anyone evil for evil. Be careful to do what is right in the eyes of everyone. 18 If it is possible, as far as it depends on you, live at peace with everyone. 19 Do not take revenge, my dear friends, but leave room for God’s wrath, for it is written: 'It is mine to avenge; I will repay,' says the Lord.

1 Thessalonians 5:15

Make sure that nobody pays back wrong for wrong, but always strive to do what is good for each other and for everyone else.