Mark 7:23
All these evils come from inside and defile a person — the conclusion restates the principle with which the teaching began (verse 15): it is what comes out that defiles, and what comes out comes from within. The teaching is complete: the purity system's appropriate target is the heart, and the heart's defilement produces the moral failures that the law exists to prevent. External cleanliness without internal transformation is cosmetic — it addresses the symptom while leaving the disease.