The first verse refers to the close of the foregoing sermon: the people that heard him were astonished at his doctrine; and the effect was, that when he came down from the mountain, great multitudes followed him; though he was so strict a Lawgiver, and so faithful a Reprover, they diligently attended him, and were loth to disperse, and go from him. Note, They to whom Christ has manifested himself, cannot but desire to be better acquainted with him. They who know much of Christ should covet to know more; and then shall we know, if we thus follow on to know the Lord. It is pleasing to see people so well affected to Christ, as to think they can never hear enough of him; so well affected to the best things, as thus to flock after good preaching, and to follow the Lamb withersoever he goes. Now was Jacob's prophecy concerning the Messiah fulfilled, that unto him shall the gathering of the people be; yet they who gathered to him did not cleave to him. They who followed him closely and constantly were but few, compared with the multitudes that were but followers at large.

In these verses we have an account of Christ's cleansing a leper. It should seem, by comparing Mar 1:40, and Luk 5:12, that this passage, though placed, by St. Matthew, after the sermon on the mount, because he would give account of his doctrine first, and then of his miracles, happened some time before; but that is not at all material. This is fitly recorded with the first of Christ's miracles, 1. Because the leprosy was looked upon, among the Jews, as a particular mark of God's displeasure: hence we find Miriam, Gehazi, and Uzziah, smitten with leprosy for some one particular sin; and therefore Christ, to show that he came to turn away the wrath of God, by taking away sin, began with the cure of a leper. 2. Because this disease, as it was supposed to come immediately from the hand of God, so also it was supposed to be removed immediately by his hand, and therefore it was not attempted to be cured by physicians, but was put under the inspection of the priests, the Lord's ministers, who waited to see what God would do. And its being in a garment, or in the walls of a house, was altogether supernatural: and it should seem to be a disease of a quite different nature from what we now call the leprosy. The king of Israel said, Am I God, that I am sent to, to recover a man of a leprosy? Kg2 5:7. Christ proved himself God, by recovering many from the leprosy, and authorizing his disciples, in his name, to do so too (Mat 10:8), and it is put among the proofs of his being the Messiah, Mat 11:5. He also showed himself to be the Saviour of his people from their sins; for though every disease is both the fruit of sin, and a figure of it, as the disorder of the soul, yet the leprosy was in a special manner so; for it contracted such a pollution, and obliged to such a separation from holy things, as no other disease did; and therefore in the laws concerning it (Lev. 13 and 14), it is treated, not as a sickness, but as an uncleanness; the priest was to pronounce the party clean or unclean, according to the indications: but the honour of making the lepers clean was reserved for Christ, who was to do it as the High Priest of our profession; he comes to do that which the law could not do, in that it was weak through the flesh, Rom 8:3. The law discovered sin (for by the law is the knowledge of sin), and pronounced sinners unclean; it shut them up (Gal 3:23), as the priest did the leper, but could go no further; it could not make the comers thereunto perfect. But Christ takes away sin; cleanses us from it, and so perfecteth for ever them that are sanctified. Now here we have,

I.The leper's address to Christ. If this happened, as it is here placed, after the sermon on the mount, we may suppose that the leper, though shut out by his disease from the cities of Israel, yet got within hearing of Christ's sermon, and was encouraged by it to make his application to him; for he that taught as one having authority, could heal so; and therefore he came and worshipped him, as one clothed with a divine power. His address is, Lord, if thou wilt, thou canst make me clean. The cleaning of him may be considered,

1.As a temporal mercy; a mercy to the body, delivering it from a disease, which, though it did not threaten life, embittered it. And so it directs us, not only to apply ourselves to Christ, who has power over bodily diseases, for the cure of them, but it also teaches us in what manner to apply ourselves to him; with an assurance of his power, believing that he is as able to cure diseases now, as he was when on earth, but with a submission to his will; Lord, if thou wilt, thou canst. As to temporal mercies, we cannot be so sure of God's will to bestow them, as we may of his power, for his power in them is unlimited by a regard to his glory and our good: when we cannot be sure of his will, we may be sure of his wisdom and mercy, to which we may cheerfully refer ourselves; Thy will be done: and this makes the expectation easy, and the event, when it comes, comfortable.

2.As a typical mercy. Sin is the leprosy of the soul; it shuts us out from communion with God, to which that we maybe restored, it is necessary that we be cleansed from this leprosy, and this ought to be our great concern. Now observe, It is our comfort when we apply ourselves to Christ, as the great Physician, that if he will, he can make us clean; and we should, with an humble, believing boldness, go to him and tell him so. That is, (1.) We must rest ourselves upon his power; we must be confident of this, that Christ can make us clean. No guilt is so great but that there is a sufficiency in his righteousness to atone for it; no corruption so strong, but there is a sufficiency in his grace to subdue it. God would not appoint a physician to his hospital that is not par negotio - every way qualified for the undertaking. (2.) We must recommend ourselves to his pity; we cannot demand it as a debt, but we must humbly request it as a favour; "Lord, if thou wilt. I throw myself at thy feet, and if I perish, I will perish there."

II.Christ's answer to this address, which was very kind, Mat 8:3.

1.He put forth his hand and touched him. The leprosy was a noisome, loathsome disease, yet Christ touched him; for he did not disdain to converse with publicans and sinners, to do them good. There was a ceremonial pollution contracted by the touch of a leper; but Christ would show, that when he conversed with sinners, he was in no danger of being infected by them, for the prince of this world had nothing in him. If we touch pitch, we are defiled; but Christ was separate from sinners, even when he lived among them.

2.He said, I will, be thou clean. He did not say, as Elisha to Naaman, Go, wash in Jordan; did not put him upon a tedious, troublesome, chargeable course of a physic, but spake the word and healed him. (1.) Here is a word of kindness, I will; I am as willing to help thee, as thou art to be helped. Note, They who by faith apply themselves to Christ for mercy and grace, may be sure that he is willing, freely willing, to give them the mercy and grace they come to him for. Christ is a Physician, that does not need to be sought for, he is always in the way; does not need to be urged, while we are yet speaking, he hears; does not need to be feed, he heals freely, not for price nor reward. he has given all possible demonstration, that he is as willing as he is able to save sinners. (2.) A word of power, Be thou clean. Both a power of authority, and a power of energy, are exerted in this word. Christ heals by a word of command to us; Be thou clean; "Be willing to be clean, and use the means; cleanse thyself from all filthiness;" but there goes along with this a word of command concerning us, a word that does the work; I will that thou be clean. Such a word as this is necessary to the cure, and effectual for it; and the Almighty grace which speaks it, shall not be wanting to those who truly desire it.

III.The happy change hereby wrought: Immediately his leprosy was cleansed. Nature works gradually, but the God of nature works immediately; he speaks it, it is done; and yet he works effectually; he commands, and it stands fast. One of the first miracles Moses wrought, was curing himself of a leprosy (Exo 4:7), for the priests under the law offered sacrifices first for their own sin; but one of Christ's first miracles was curing another of leprosy, for he had no sin of his own to atone for.

IV.The after - directions Christ gave him. It is fit that they who are cured by Christ should ever after be ruled by him.

1.See thou tell no man; "Tell no man till thou has shown thyself to the priest, and he has pronounced thee clean; and so thou hast a legal proof, both that thou wast before a leper, and art now thoroughly cleansed." Christ would have his miracles to appear in their full light and evidence, and not to be published till they could appear so. Note, They that preach the truths of Christ should be able to prove them; to defend what they preach, and convince gainsayers. "Tell no man, till thou hast showed thyself to the priest, lest if he hear who cured thee, he should out of spite deny to give thee a certificate of the cure, and so keep thee under confinement." Such were the priests in Christ's time, that they who had any thing to do with them had need to have been as wise as serpents.

2.Go show thyself to the priest, according to the law, Lev 14:2. Christ took care to have the law observed, lest he should give offence, and to show that he will have order kept up, and good discipline and respect paid to those that are in office. It may be of use to those that are cleansed of their spiritual leprosy, to have recourse to Christ's ministers, and to open their case to them, that they may assist them in their enquiries into their spiritual state, and advise, and comfort, and pray for them.

3.Offer the gift that Moses commanded, in token of thankfulness to God, and recompence to the priest for his pains; and this for a testimony unto them; either, (1.) Which Moses commanded for a testimony: the ceremonial laws were testimonies of God's authority over them, care of them, and of that grace which should afterwards be revealed. Or, (2.) "Do thou offer it for a testimony, and let the priest know who cleansed thee, and how; and it shall be a testimony, that there is one among them who does that which the high priest cannot do. Let it remain upon record as a witness of my power, and a testimony for me to them, if they will use it and improve it; but against them, if they will not:" for so Christ's word and works are testimonies.

And behold there came a leper,.... As soon as he came down from the mountain, and whilst he was in the way; though Luke says, Luk 5:12 "when he was in a certain city"; in one of the cities of Galilee; one of their large towns, or unwalled cities, into which a leper might come: he might not come into walled (b) towns, at least they might turn him out, though without punishment: for the canon runs thus (c),

"a leper that enters into Jerusalem is to be beaten; but if he enters into any of the other walled towns, though he has no right, as it is said, "he sitteth alone", he is not to be beaten.''

Besides, this leper, as Luke says, was "full of leprosy", Luk 5:12 see the note there; and he might be pronounced clean by the priest, though not healed, and so might go into any city or synagogue: the law concerning such an one, in Lev 13:1 is a very surprising one; that if only there were some risings and appearances of the leprosy here and there, the man was unclean; but if "the leprosy covered all his flesh", then he was pronounced clean; and such was this man: he was a very lively emblem of a poor vile sinner, full of sin and iniquity, who is brought to see himself all over covered with sin, when he comes to Christ for pardon and cleansing; and is so considered by Christ the high priest, when he applies his justifying righteousness and sin purging blood to his conscience. A leper, by the Jews (d), is called "a wicked" man; for they suppose leprosy comes upon him for evil speaking. This account is ushered in with a "behold", as a note of admiration and attention, expressing the wonderfulness of the miracle wrought, and the seasonableness of it to confirm the doctrines Christ had been preaching to the multitude. This man came of his own accord, having heard of the fame of Christ;

and worshipped him in a civil and respectful way, showing great reverence to him as a man; which he did by falling down on his knees, and on his face; prostrating himself before him, in a very humble and submissive manner, as the other evangelists relate: for that he worshipped him as God, is not so manifest; though it is certain he had an high opinion of him, and great faith in him; which he very modestly expresses,

saying, Lord, if thou wilt, thou canst make me clean: he was fully assured of his power, that he could make him clean, entirely rid him of his leprosy, which the priest could not do; who could only, according to the law, pronounce him clean, so that he might be admitted to company, but could not heal him of his disease: this the poor man was persuaded Christ could do for him, and humbly submits it to his will; of which, as yet, he had no intimation from him. And thus it is with poor sensible sinners under first awakenings; they can believe in the ability of Christ to justify them by his righteousness, cleanse them by his blood; and save them by his grace to the uttermost: but they stick at, and hesitate about his willingness, by reason of their own vileness and unworthiness.

(b) Misn. Celim. c. 1. sect. 7. (c) Maimon. Biath Hamikdash, c. 3. sect. 8. & in Misn. Celim. c. 1. sect. 8. (d) Maimon. in Misn. Negaim, c. 12. sect. 5. & Bartenora in ib. sect. 6.

And, behold, there came a leper--"a man full of leprosy," says Luk 5:12. Much has been written on this disease of leprosy, but certain points remain still doubtful. All that needs be said here is that it was a cutaneous disease, of a loathsome, diffusive, and, there is reason to believe, when thoroughly pronounced, incurable character; that though in its distinctive features it is still found in several countries--as Arabia, Egypt, and South Africa--it prevailed, in the form of what is called white leprosy, to an unusual extent, and from a very early period, among the Hebrews; and that it thus furnished to the whole nation a familiar and affecting symbol of SIN, considered as (1) loathsome, (2) spreading, (3) incurable. And while the ceremonial ordinances for detection and cleansing prescribed in this case by the law of Moses (Lev. 13:1-14:57) held forth a coming remedy "for sin and for uncleanness" (Psa 51:7; Kg2 5:1, Kg2 5:7, Kg2 5:10, Kg2 5:13-14), the numerous cases of leprosy with which our Lord came in contact, and the glorious cures of them which He wrought, were a fitting manifestation of the work which He came to accomplish. In this view, it deserves to be noticed that the first of our Lord's miracles of healing recorded by Matthew is this cure of a leper.

and worshipped him--in what sense we shall presently see. Mark says (Mar 1:40), he came, "beseeching and kneeling to Him," and Luke says (Luk 5:12), "he fell on his face."

saying, Lord, if thou wilt, thou canst make me clean--As this is the only cure of leprosy recorded by all the three first Evangelists, it was probably the first case of the kind; and if so, this leper's faith in the power of Christ must have been formed in him by what he had heard of His other cures. And how striking a faith is it! He does not say he believed Him able, but with a brevity expressive of a confidence that knew no doubt, he says simply, "Thou canst." But of Christ's willingness to heal him he was not so sure. It needed more knowledge of Jesus than he could be supposed to have to assure him of that. But one thing he was sure of, that He had but to "will" it. This shows with what "worship" of Christ this leper fell on his face before Him. Clear theological knowledge of the Person of Christ was not then possessed even by those who were most with Him and nearest to Him. Much less could full insight into all that we know of the Only-begotten of the Father be expected of this leper. But he who at that moment felt and owned that to heal an incurable disease needed but the fiat of the Person who stood before him, had assuredly that very faith in the germ which now casts its crown before Him that loved us, and would at any time die for His blessed name.