Jesus protests against human customs being given the weight of divine law, while the essence of God’s law is ignored. True uncleanness comes not from external things, but from the intentions of the human heart. Last week Jesus told us “the words that I have spoken to you are spirit and life” (John 6:63). We who were washed in the word when we were born in the font return to it every Sunday to ask God to create in us clean hearts.