Deuteronomy 19:19-21

Young's Literal Translation

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;

²¹ and thine eye doth not pity -- life for life, eye for eye, tooth for tooth, hand for hand, foot for foot.