Matthew 5:36-38

Amplified Bible

³⁶ Nor shall you make an oath by your head, for you are not able to make a single hair white or black. ³⁷ But let your statement be, ‘Yes, yes’ or ‘No, no’ [a firm yes or no]; anything more than that comes from the evil one.^(A)

³⁸ “You have heard that it was said, ‘An eye for an eye, and a tooth for a tooth [punishment that fits the offense].’^(B)