Deuteronomy 19:15 in the King James Version
One witness shall not rise up against a man for any iniquity, or for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall the matter be established.
Context
14 You shall not remove your neighbor’s landmark, which they of old time have set, in your inheritance which you shall inherit, in the land that the LORD your God gives you to possess.
15 One witness shall not rise up against a man for any iniquity, or for any sin that he sins. At the mouth of two witnesses, or at the mouth of three witnesses, shall a matter be established.
16 If an unrighteous witness rises up against any man to testify against him of wrongdoing,