Deuteronomy 27:24

Cursed be he that smiteth his neighbour secretly ,.... And kills him, and the murder is not known; the curse of God follows such, and overtakes them sooner or later. Some interpret this of smiting with the tongue, of secret backbiting and slander; so the Targum of Jonathan,"that smiteth with the third tongue;'or false accusation:

and all the people shall say Amen ; as disapproving of and condemning such a practice, even slander, and especially murder.