Matthew 8:2

"For when He was come down from the mountain, there came a leper, saying, Lord, if Thou wilt, Thou canst make me clean." Great was the understanding and the faith of him who so drew near. For he did not interrupt the teaching, nor break through the auditory, but awaited the proper time, and approaches Him "when He is come down." And not at random, but with much earnestness, and at His knees, he beseeches Him, as another evangelist saith, and with the genuine faith and right opinion about him. For neither did he say, "If Thou request it of God," nor, "If Thou pray," but, "If Thou wilt, Thou canst make me clean." Nor did he say, "Lord, cleanse me," but leaves all to Him, and makes His recovery depend on Him, and testifies that all the authority is His.

Among others who were not able to ascend into the mount was the leper, as bearing the burden of sin; for the sin of our souls is a leprosy. And the Lord came down from the height of heaven, as from a mountain, that He might purge the leprousness of our sin; and so the leper as already prepared meets Him as He came down. He did not ask it of Him as of a human physician, but adored Him as God. For faith and confession make a perfect prayer; so that the leprous man in adoring fulfilled the work of faith, and the work of confession in words, he made adoration to him, saying; And thus he rewarded a spiritual Physician with a spiritual reward; for as physicians are gained by money, so He with prayer. We offer to God nothing more worthy than faithful prayer. In that he says, If thou wilt, there is no doubt that Christ's will is ready to every good work; but only doubt whether that cure would be expedient for him, because soundness of body is not good for all. If thou wilt then is as much as to say, I believe that Thou wiliest whatever is good, but I know not if this that I desire for myself is good.

Morally; by the leper is signified the sinner; for sin makes an unclean and impure soul; he falls down before Christ when he is confounded concerning his former sins; yet he ought to confess, and to seek the remedy of penitence; so the leper shows his disease, and asks a cure. The Lord stretches out His hand when He affords the aid of Divine mercy; whereupon follows immediately remission of sin; nor ought the Church to be reconciled to the same, but on the sentence of the Priest.

(Hom. in Dom. 3 Epiph.) Should any be perplexed how, when the Lord seems here to approve Moses' offering, the Church does not receive it, let him remember, that Christ had not yet offered His body for a holocaust. And it behoved that the typical sacrifices should not be taken away, before that which they typified was established by the testimony of the Apostles' preaching, and by the faith of the people believing. By this man was figured the whole human race, for he was not only leprous, but, according to the Gospel of Luke, is described as full of leprosy. For all have sinned, and need glory of God; (Rom. 3:23.) to wit, that glory, that the hand of the Saviour being stretched out, (that is, the Word being made flesh,) and touching human nature, they might be cleansed from the vanity of their former ways; and that they that had been long abominable, and cast out from the camp of God's people, might be restored to the temple and the priest, and be able to offer their bodies a living sacrifice to Him to whom it is said, Thou art a Priest for ever. (Ps. 110:4.)

(ubi sup.) He works the cures below, and does none in the mount; for there is a time for all things under heaven, a time for teaching, and a time for healing. On the mount He taught, He cured souls, He healed hearts; which being finished, as He came down from the heavenly heights to heal bodies, there came to Him a leper and made adoration to Him; before he made his suit, he began to adore, showing his great reverence. (ubi sup.) Lord, by Thee all things were made, Thou therefore, if thou will, canst make me clean. Thy will is the work, and all works are subject to Thy will. Thou of old cleansedst Naaman the Syrian of his leprosy by the hand of Elisha, and now, if thou will, thou canst make me clean.