What is the context?
Jesus turns from the leaders' complaint about unwashed hands to the crowd, then explains His teaching privately to the disciples. The question is what makes a person unclean before God. His answer moves attention from food entering the body to evil coming from the heart.
The verb κοινόω (koinoo, koy-NOH-oh) means to make unclean or defile. It links the discussion of ceremonial uncleanness with Jesus' deeper point about moral corruption. Food passes through the stomach and is eliminated; evil thoughts and actions arise from within the person.
The BSB ends verse 19 with a comment that all foods are clean. Its main text does not include the sentence traditionally numbered verse 16; that sentence is noted in the BibleHub BSB footnote. The passage above follows the BSB's main text and verse numbering.
Jesus' list includes both actions and attitudes: sexual immorality, theft, murder, adultery, greed, wickedness, deceit, debauchery, envy, slander, arrogance, and foolishness. The issue reaches beyond the words a person says. What goes wrong within can become harmful conduct toward others.
This explanation follows the Corban example, where a religious rule was being used to withhold help from parents. Ceremonial attention did not prevent a failure of obedience and care. Jesus now identifies the source of such evil instead of treating outward washing as its cure.
How is this passage commonly understood?
Christian readings commonly understand Jesus to locate moral defilement in the heart rather than in food. Calvin's discussion of this passage and Wesley's notes on Mark 7:15 both stress that sinful attitudes and conduct come from the person; the Catholic Catechism, 582, likewise connects Jesus' teaching about clean food with what comes from the heart.
Where does this fit in God's plan?
The problem of an unclean heart belongs to a larger story of God's cleansing work. In Ezekiel 36:22–28, God promises Israel cleansing, a new heart, and His Spirit leading people into obedience. That is a supported connection in theme: the need Jesus exposes calls for more than improving an outward appearance.
Hebrews 9:11–15 explains how Christ's self-offering reaches the conscience and enables service to the living God. Galatians 5:16–25 describes the contrasting fruit of life by the Spirit, including love, patience, and self-control. Scripture carries us from recognizing the inner source of evil to God's work of cleansing and a changed life.
The clean-and-unclean language also matters when the gospel reaches Gentiles. In Acts 10:9–20,28,34–48, Peter's vision uses food, and Peter explicitly applies what God shows him to people: he must not call a person impure or unclean. He then witnesses Gentiles receiving the Holy Spirit. This later account shows the wider reach of God's welcome; it is a connection between the accounts, not a claim that Jesus names Cornelius in this passage.
What is our position?
We don't have a position on this passage yet. When our study reaches a conclusion the text supports, it will appear here.