This all started when the Pharisees and Teachers of the Law saw Jesus’ disciples eating in the market place with unceremoniously cleaned hands. They came to Jesus demanding to know why they weren’t following tradition. Jesus then quoted Isaiah 29:13 to them, “These people honor Me with their lips, but their hearts are far from Me. They worship Me in vain; their teachings are but rules taught by men.” So in this verse above Jesus is calling their traditions what they really were – useless commands of man…all the while abandoning the authoritative Commandments of God. In other words, they were worshiping rules and regulations made up by men, not worshiping their Creator.