Jamieson, Fausset and Brown on Matthew 15:10

10. And he called the multitude, and said unto them--The foregoing dialogue, though in the people's hearing, was between Jesus and the pharisaic cavillers, whose object was to disparage Him with the people. But Jesus, having put them down, turns to the multitude, who at this time were prepared to drink in everything He said, and with admirable plainness, strength, and brevity, lays down the great principle of real pollution, by which a world of bondage and uneasiness of conscience would be dissipated in a moment, and the sense of sin be reserved for deviations from the holy and eternal law of God.

Hear and understand: