In this sermon Jesus challenges superficial religious practices. The Pharisees and scribes criticize Jesus's disciples for not adhering to traditional handwashing rituals, reflecting their overemphasis on human traditions over God's commandments. Jesus counters by highlighting their hypocrisy, pointing out how they manipulate religious rules for personal gain while neglecting genuine obedience to God's word. He emphasizes that true defilement comes from within, from a heart disconnected from God, rather than external actions. The sermon calls for a heartfelt commitment to God's word and worship from a new heart.