Deuteronomy 17:7

The hands of the witnesses shall be first upon him to put him to death, Deuteronomy 13:9, in order thus openly to manifest their firm conviction of the guilt of the accused, and afterward the hands of all the people, for the transgression was one affecting the entire nation. So thou shalt put the evil away from among you, Deuteronomy 13:5. The same holy zeal should be found in every Christian congregation in putting flagrant sinners out of their midst.