Matthew 15:11 - Exposition

Not that which goeth into the mouth defileth a man. The word rendered "defileth" ( κοινοῖ ) means "renders common," in opposition to ἁγιάζειν , "to separate" for God's use; hence the verb, ethically applied, signifies "to contract guilt." The rabbis taught that certain meats of themselves polluted the soul, made it abominable in God's sight. This was a perversion of the law respecting clean and unclean food. The pollution or guilt arose, not from the nature of the meat, but from the eating of it in contravention of a positive command. It was the disobedience, not the food, which affected the soul. It is remarkable that these distinctions of meats still obtain among half the civilized inhabitants of the world—Buddhists, Hindoos, Mohammedans—and that one of the hardest tasks of Christian missionaries is to make men understand the non-importance of these differences. We do not see that Christ here abrogated the Levitical Law, but he certainly prepared the way for its supersession and transformation. But he made no sudden and violent change in the constituted order of things. Indeed, some distinctions were maintained in apostolical times, as we read in Acts 10:14 ; Acts 15:20 , Acts 15:29 ; and it was only gradually, and as circumstances made their observation impossible, that such ceremonial obligations were regarded as obsolete. It is, perhaps, with the view of not shocking inveterate prejudice, that he does not say, "No food whatever defileth," but "That which goeth into the mouth" defileth not, referring especially to the notion adore reprehended, that eating with unwashen hands polluted the food taken and the soul of the person who con sumed it. Our Lord says nothing of excess, e.g. gluttony and drunkenness, which, of course, has a polluting and deteriorating effect on the moral nature (see Luke 21:34 ). But that which cometh out of the mouth . In the former sentence the mouth is regarded simply as the instrument for receiving food and preparing it for digestion; in this sentence it is considered as the organ of the heart, that which gives outward expression to inward thoughts and conceptions. Fillion distinguishes them as "la bouche physique, et la bouche morale." Philo has well said, "The mouth is that by which, as Plato puts it, mortal things enter, and whence immortal things issue. For therein pass meat and drink, the perishable food of a perishable body; but from it proceed words, immortal laws of an immortal soul, by which the rational life is directed and governed" ('De Mundi Opif.,' § 40). Defileth a man. Pollutes his soul, not with merely ceremonial defilement, but intrinsically and morally. Of course, our Lord is referring to evil words, etc., as he explains in Acts 15:19 . For the mouth may give utterance to God's praise, words of love, sympathy, edification. But the evil in a man's heart will show itself in his mouth; and the open expression will react on the wicked thought, and make it more substantial, deadly, and operative.