Cleanse first that which is within the cup and the platter - Let them be filled with the fruits of honest industry, and then the outside and the inside will be really "clean." By this allusion to the cup and platter he taught them that it was necessary to cleanse the heart first, that the external conduct might be really pure and holy.

Thou blind Pharisee,.... Well might Christ call such an one a blind Pharisee, who was so scrupulously careful to cleanse his cup and platter; and yet made no conscience of filling them with what was gotten in an unjust way, and so defiled himself and them:
cleanse first that which is within the cup and platter, that the outside of them may be clean also: get food and drink in an honest way, remove all extortion and oppression out of thine hands, and luxury and intemperance from thy table; and so shall the outward cleanness of thy cup and dish, be no reproach unto thee, or testimony against thee, of thine hypocrisy. So the great concern of all men should be, inward purity; that their hearts be purified by faith in the blood of Christ, and sprinkled from an evil conscience by the same; that principles of grace and holiness be formed in them by the Spirit of God; and then their outward lives and conversations being influenced thereby, will be honourable and agreeable to their professions. Otherwise, an external reformation, or an outward show of holiness, and bare pretensions to it, without internal grace, will never be of any avail in the sight of God.

Thou blind Pharisee, cleanse first that which is within the cup and platter, that the outside of them may be clean also--In Luke (Luke 11:40) it is, "Ye fools, did not He that made that which is without make that which is within also?"--"He to whom belongs the outer life, and of right demands its subjection to Himself, is the inner man less His?" A remarkable example this of our Lord's power of drawing the most striking illustrations of great truths from the most familiar objects and incidents in life. To these words, recorded by Luke, He adds the following, involving a principle of immense value: "But rather give alms of such things as ye have, and behold, all things are clean unto you" (Luke 11:41). As the greed of these hypocrites was one of the most prominent features of their character (Luke 16:14), our Lord bids them exemplify the opposite character, and then their outside, ruled by this, would be beautiful in the eye of God, and their meals would be eaten with clean hands, though much fouled with the business of this everyday world. (See Ecclesiastes 9:7).

Ye build the tombs of the prophets - And that is all, for ye neither observe their sayings, nor imitate their actions.