Matthew 5:35-38

5:35 not by earth, because it is his footstool, and not by Jerusalem, because it is the city of the great King. 5:36 Do not take an oath by your head, because you are not able to make one hair white or black. 5:37 Let your word be ‘Yes, yes’ or ‘No, no.’ More than this is from the evil one.

Retaliation

5:38 “You have heard that it was said, ‘An eye for an eye and a tooth for a tooth.’