What is the context?
This verse is part of Jesus' quotation of Isaiah in a dispute about the elders' traditions. The immediate example is a teaching that allows resources declared devoted to God to be withheld from needy parents. Jesus has already identified that practice as setting aside God's command.
The word translated worship is σέβομαι, sebomai (SEH-boh-my), meaning to revere or worship. Thayer's entry includes this verse. In the quotation, the claimed reverence is empty because human precepts are being taught as God's doctrine.
The preceding verse supplies the contrast between lips and heart. The issue is not the sincerity of a spoken claim by itself. Jesus measures the teaching against God's command and exposes the disobedience it permits.
How is this passage commonly understood?
Christians commonly understand this as a warning against empty religious honor and treating human commands as God's teaching. Wesley on Matthew 15:8–9 emphasizes the missing heart response and human commands being placed alongside or above God's commands.
The wider disagreement concerns which teaching counts as merely human. The Westminster Confession, 1.6 and 1.10, tests church teaching by Scripture as final authority. The Catholic Catechism, 80–83, distinguishes changeable customs from apostolic Tradition, which it receives together with Scripture. Both reject replacing God's word with arbitrary human requirements, while understanding the source of binding teaching differently.
Where does this fit in God's plan?
John 4:19–24 places true worship within the work Jesus is bringing: the Father seeks people who worship in spirit and truth. That is a related teaching, rather than a claim that the two conversations address identical customs.
Together, these passages direct attention to a response to God that reaches the heart and follows His truth. The change Jesus brings concerns more than where a person worships or what religious words they use. It reaches the reality of their relationship with the Father.
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.