Matthew 15:2 - Ellicott's Commentary On The Whole Bible

They wash not their hands when they eat bread. — St. Mark (Mark 7:3-4), writing for Gentiles, explains the nature of the tradition more fully. What the Pharisees insisted on was not cleanliness as such, but the avoidance of ceremonial pollution. They shrank not from dirt, but from defilement. If they had been in the market, they might have come in contact with the heathen or the publican. If they ate or drank out of a metal or earthenware cup, the last lip that touched it might have been that of a heathen, and therefore that too needed purification. The pride which led them to stand aloof from the rest of mankind showed itself in this, as in all their other traditions. Indifference to their rules in peasants and fishermen, as such — as belonging to the crowd whom they scorned as the brute “people of the earth” — they could afford to tolerate. What shocked them was to see the disciples of One who claimed to be a Prophet or a Rabbi indulging in that indifference. According to their traditions, the act of which they complained stood on the same level as sexual impurity, and exposed those who were guilty of it to the excommunication of the Sanhedrin, or great Council.