Deuteronomy 19:18-20

Young's Literal Translation

¹⁸ and the judges have searched diligently, and lo, the witness [is] a false witness, a falsehood he hath testified against his brother:

¹⁹ `Then ye have done to him as he devised to do to his brother, and thou hast put away the evil thing out of thy midst,

²⁰ and those who are left do hear and fear, and add not to do any more according to this evil thing in thy midst;