Deuteronomy 19:18-20

Amplified Bible

¹⁸ The judges shall investigate thoroughly, and if the witness is a false witness, and he has accused his brother falsely, ¹⁹ then you shall do to him just as he had intended to do to his brother. So you shall remove the evil from among you. ²⁰ Those who remain will hear and be afraid, and will never again do such an evil thing among you.