As opposed to the Jewish Leaders whose focus was only on the external, Jesus was addressing in these verses the internal man. And true to form, as He did many times, we then find Jesus explaining further to His disciples the truths of this notion of clean and unclean. Speaking to them in verses 21-23 Jesus said, “For from within, out of men’s hearts, come evil thoughts, sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance, and folly. All these evils come from inside and make a man unclean.” The lesson to be learned here is that our defilement does not come from the outside…it happens only when we allow it in.