16 "If a malicious witness comes forward and accuses someone of a crime, 17 then both the accuser and accused must appear before the Lord by coming to the priests and judges in office at that time. 18 The judges must investigate the case thoroughly. If the accuser has brought false charges against his fellow Israelite, 19 you must impose on the accuser the sentence he intended for the other person. In this way, you will purge such evil from among you. 20 Then the rest of the people will hear about it and be afraid to do such an evil thing. 21 You must show no pity for the guilty! Your rule should be life for life, eye for eye, tooth for tooth, hand for hand, foot for foot.
Matthew Henry's Commentary on Deuteronomy 19:16-21
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.