Lux Domini
Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught?

Study Helps

Interpretation

Christ shows that the defilement they ought to fear, was not from what entered their mouths as food, but from what came out of their mouths, which showed the wickedness of their hearts.

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This thought runs through Matthew 15:17-20.