Clean And Unclean Matthew 15:11 11What goes into a man's mouth does not make him 'unclean,' but what comes out of his mouth, that is what makes him 'unclean. Pretty powerful verse when we think about it and in order for us to really understand . Back in those days "Unclean "was referring to the law of Moses that what was taught that what people ate and touched could make them unclean and therefore unfit to worship God . The Jewish people tried to keep their relationship with God clean and pure by eating only foods that the law allowed . But Jesus said that what the people eat doesn't make them unclean . Rather it is what they think and say that does.