Deuteronomy 17:5-7

New Revised Standard Version, Anglicised Catholic Edition

⁵ then you shall bring out to your gates that man or that woman who has committed this crime and you shall stone the man or woman to death. ⁶ On the evidence of two or three witnesses the death sentence shall be executed; a person must not be put to death on the evidence of only one witness. ⁷ The hands of the witnesses shall be the first raised against the person to execute the death penalty, and afterwards the hands of all the people. So you shall purge the evil from your midst.