What Defiles a Person?

Lesson overview

Pharisees and scribes from Jerusalem question why some of Jesus’ disciples eat with ritually "common" hands rather than following the tradition of the elders.

Jesus refuses the premise that their tradition can stand as the measure of covenant faithfulness. Quoting Isaiah, he exposes worship that sounds reverent while the heart remains far from God. The Corban example makes the charge concrete: a religious vow can be used to evade the divine command to honor one’s parents.

Jesus then calls the crowd and relocates the source of defilement. Food enters the stomach; evil proceeds from the human heart. Mark adds that Jesus’ teaching makes all foods clean, signaling a major development in the Gospel’s movement beyond Israel’s ritual boundaries. The passage does not ridicule washing, Jewish devotion, or embodied practices. It confronts every religious community with a sharper question: do our traditions help us obey God’s word and love our neighbors, or do they protect us from the obedience they claim to serve?

Jesus exposes the heart—not unwashed hands or food—as the source of moral defilement and judges every religious tradition by whether it serves God’s commands of wholehearted love.