18 and the judges shall make diligent inquisition: and, behold, if the witness be a false witness, and have testified falsely against his brother; 19 then shall ye do unto him, as he had thought to do unto his brother: so shalt thou put away the evil from the midst of thee. 20 And those that remain shall hear, and fear, and shall henceforth commit no more any such evil in the midst of thee.
Matthew Henry's Commentary on Deuteronomy 19:18-20
Commentary on Deuteronomy 19:15-21
(Read Deuteronomy 19:15-21)
Sentence should never be passed upon the testimony of one witness alone. A false witness should suffer the same punishment which he sought to have inflicted upon the person he accused. Nor could any law be more just. Let all Christians not only be cautious in bearing witness in public, but be careful not to join in private slanders; and let all whose consciences accuse them of crime, without delay flee for refuge to the hope set before them in Jesus Christ.