Approaching, worshipped What is the meaning of the verb proskunein, which is rendered in the Latin version, adorare, to adore or worship, may be easily learned from this passage. For the exposition of it we may rely on the other two Evangelists, of whom Mark says, that he fell on his knees, and Luke, that he fell down on his face The outward gesture of kneeling was exhibited by the leper as a token of reverence. Now we know, that such marks of respect were in general use among the Jews, as the people of the East are more addicted to that kind of ceremonies. Many people accordingly think, that the leper did not intend to render to Christ divine worship, but gave him a respectful salutation as a distinguished prophet of God. I enter into no dispute as to the feelings which moved the leper to pay reverence to Christ. But I look at what he attributed to him, that he was able to cleanse him, if he were willing By these words he declared, that he acknowledged a divine power in Christ: and when Christ replies, I am willing, he shows that he claimed more for himself than belongs to man. He who, by the mere expression of his will, restores health to men, must possess supreme authority. Whether the leper believed that Christ was the Son of God, or that he had received this power in the same manner as Moses and the other prophets, he entertains no doubt that he held in his hand, and in his power, the gift of healing. True, he speaks conditionally, if thou art willing, thou art able But this is not inconsistent with that certainty of faith, which God demands in our prayers: for men ought not to expect more than God promises. The leper had not learned by any inspired communication, or any promise of God, what Christ would do. It would have been improper in him, therefore, to go beyond these limits for though we sometimes read that certain persons prayed without any condition, we ought to believe that they were guided by special movements of the Spirit, which must not be taken for a general rule. I am not even certain if we are at liberty to say, strictly speaking, that the leper offered a prayer. He only declares, that he is so fully convinced of the power of Christ, as to entertain no doubt that it is in his power to cure leprosy; and then presents himself to be healed, but uncertain as to the result, because he did not yet know the will of Christ.

There came a leper - No disease with which the human family has been afflicted has been more dreadful than that which is often mentioned in the Bible "as the leprosy." It first exhibits itself on the surface of the skin. The appearance is not always the same, but it commonly resembles the spot made by the puncture of a pin or the pustules of a ringworm. The spots generally make their appearance very suddenly. Perhaps its appearance might be hastened by any sudden passion, as fear or anger. See Numbers 12:10; 2-Chronicles 26:19. The spots commonly exhibit themselves at first on the face, about the nose and eyes, and increase in size a number of years, until they become as large as a pea or a bean.
There are three kinds of leprosy, distinguished by the appearance of the spots - the white, the black, and the red leprosy. These spots, though few at first, gradually spread until they cover the whole body.
But, though the "appearance" of the disease is at first in the skin, yet it is deeply seated in the bones, and marrow, and joints of the body. We have reason to suppose that in children it is concealed in the system for a number of years until they arrive at the age of puberty; and in adults for three or four years, until at last it gives fearful indications on the skin of its having gained a well-rooted and permanent existence. A leprous person may live twenty, or thirty, or even fifty years, if he received the disease at his birth, but they will be years of indescribable misery. The bones and marrow are pervaded with the disease. The malady advances from one stage to another with slow and certain ruin. "Life still lingers amid the desolation;" the joints, and hands, and feet lose their power; and the body "collapses," or falls together in a form hideous and awful. There is a form of the disease in which it commences at the extremities: the joints separate; the fingers, toes, and other members one by one fall off; and the malady thus gradually approaches the seat of life. The wretched victim is thus doomed to see himself dying "piecemeal," assured that no human power can arrest for a moment the silent and steady march of this foe to the seat of life.
This disease is contagious and hereditary. It is easily communicated from one to another, and is transmitted to the third and fourth generation. The last generation that is afflicted with it commonly exhibits the symptoms by decayed teeth, by a fetid breath, and by a diseased complexion.
Moses gave particular directions by which the real leprosy was to be distinguished from other diseases. See Leviticus. 13. The leprous person was, in order to avoid contagion, very properly separated from the congregation. The inspection of the disease was committed to the priest; and a declaration on his part that the person was healed, was sufficient evidence to restore the afflicted man to the congregation. It was required, also, that the leprous person should bring an offering to the priest of two birds, probably "sparrows" (see Leviticus 14:4 's margin), one of which was slain and the other dismissed, Leviticus 14:5-7. In compliance with the laws of the land, Jesus directed the man that he had healed to make the customary offering, and to obtain the testimony of the priest that he was healed. The leprosy has once, and but once, appeared in America. This loathsome and most painful disease has in all other instances been confined to the Old World, and chiefly to the Eastern nations.
It is matter of profound gratitude to a benignant God that this scourge has been permitted but once to visit the New World. That awful calamity was on the island of Guadeloupe, in the West Indies, about the year 1730, and is thus described by an eye-witness: "Its commencement is imperceptible. There appear only some few white spots on the skin. At first they are attended with no pain or inconvenience, but no means whatever will remove them. The disease imperceptibly increases for many years. The spots become larger, and spread over the whole body. When the disease advances, the upper part of the nose swells, the nostrils become enlarged, and the nose itself grows soft. Tumors appear on the jaws; the eyebrows swell; the ears become thick; the points of the fingers, as also the feet and the toes, swell; the nails become scaly; the joints of the hands and feet separate and drop off. In the last stage of the disease the patient becomes a hideous spectacle, and falls to pieces.
Worshipped him - Bowed down before him, to show him respect. See the notes at Matthew 2:2.
If thou wilt - This was an exhibition of great faith, and also an acknowledgment of his dependence on the will of Jesus, in order to be healed. So every sinner must come. He must feel that Jesus "can" save him. He must also feel that he has no claim on him; that it depends on his sovereign will; and must cast himself at his feet with the feelings of the leper:
"I can but perish if I go;
I am resolved to try;
For if I stay away, I know
I shall forever die."
Happily, no one ever came to Jesus with this feeling who was not received and pardoned.
Make me clean - Heal me. The leprosy was regarded as an unclean and disgusting disease. To be "healed," therefore, was expressed by being "cleansed" from it.

And, behold, there came a leper - The leprosy λεπρα, from λεπις, a scale, was an inveterate cutaneous disease, appearing in dry, thin, white scurfy scales or scabs, either on the whole body, or on some part of it, usually attended with violent itching, and often with great pain. The eastern leprosy was a distemper of the most loathsome kind, highly contagious, so as to infect garments, (Leviticus 13:47, etc)., and houses, (Leviticus 14:34, etc)., and was deemed incurable by any human means. Among the Jews, God alone was applied to for its removal; and the cure was ever attributed to his sovereign power.
The various symptoms of this dreadful disorder, which was a striking emblem of sin, may be seen in Leviticus 13:14 :, where also may be read the legal ordinances concerning it; which, as on the one hand, they set forth how odious sin is to God, so, on the other, they represent the cleansing of our pollutions by the sacrifice and resurrection of Christ, by the sprinkling and application of his blood, and by the sanctifying and healing influences of the Holy Spirit.
The Greek name λεπρα, seems to have been given to this distemper, on account of the thin, white Scales (λεπιδες) with which the bodies of the leprous were sometimes so covered as to give them the appearance of snow, Exodus 4:6; Numbers 12:10; 2-Kings 5:27.
Herodotus, lib. 1, mentions this disorder as existing, in his time, among the Persians. He calls it λευκην, the white scab; and says, that those who were affected with it were prohibited from mingling with the other citizens; and so dreadful was this malady esteemed among them that they considered it a punishment on the person, from their great god, the sun, for some evil committed against him. Dr. Mead mentions a remarkable case of this kind which came under his own observation. "A countryman whose whole body was so miserably seized with it that his skin was shining as covered with flakes of snow, and as the furfuraceous or bran-like scales were daily rubbed off, the flesh appeared quick or raw underneath." See the doctor's Medica Sacra, chap. 2. It was probably on account of its tendency to produce this disorder, in that warm climate, that God forbade the use of swine's flesh to the Jews. Feeding on this crude aliment, in union with the intemperate use of ardent spirits, is, in all likelihood, the grand cause of the scurvy, which is so common in the British nations, and which would probably assume the form and virulence of a leprosy, were our climate as hot as that of Judea. See the notes on Exodus 4:6, and on Leviticus 13 (note) and Leviticus 14 (note).
Lord, if thou wilt, thou canst make me clean - As this leper may be considered as a fit emblem of the corruption of man by sin; so may his cure, of the redemption of the soul by Christ. A sinner, truly penitent, seeks God with a respectful faith; approaches him in the spirit of adoration; humbles himself under his mighty hand, acknowledging the greatness of his fall, and the vileness of his sin; his prayer, like that of the leper, should be humble, plain, and full of confidence in that God who can do all things, and of dependence upon his will or mercy, from which all good must be derived. It is peculiar to God that he need only will what he intends to perform. His power is his will. The ability of God to do what is necessary to be done, and his willingness to make his creatures happy, should be deeply considered by all those who approach him in prayer. The leper had no doubt of the former, but he was far from being equally satisfied in respect of the latter.

(1) And, behold, there came a leper and worshipped him, saying, Lord, if thou wilt, thou canst make me clean.
(1) Christ in healing the leprous with the touch of his hand, shows that he abhors no sinners that come unto him, be they ever so unclean.

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, Luke 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", Luke 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 Leviticus 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.

In these verses we have an account of Christ's cleansing a leper, who came and worshipped him, as one clothed with Divine power. This cleansing directs us, not only to apply to Christ, who has power over bodily diseases, for the cure of them, but it also teaches us in what manner to apply to him. When we cannot be sure of God's will, we may be sure of his wisdom and mercy. No guilt is so great, but there is that in Christ's blood which atones for it; no corruption so strong, but there is that in his grace which can subdue it. To be made clean we must commend ourselves to his pity; we cannot demand it as a debt, but we must humbly request it as a favour. Those who by faith apply to Christ for mercy and grace, may be sure that he is freely willing to give them the mercy and grace they thus seek. And those afflictions are blessed that bring us to know Christ, and cause us to seek help and salvation from him. Let those who are cleansed from their spiritual leprosy, go to Christ's ministers and open their case, that they may advise, comfort, and pray for them.

And, behold, there came a leper--"a man full of leprosy," says Luke 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 (Leviticus. 13:1-14:57) held forth a coming remedy "for sin and for uncleanness" (Psalm 51:7; 2-Kings 5:1, 2-Kings 5:7, 2-Kings 5:10, 2-Kings 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 (Mark 1:40), he came, "beseeching and kneeling to Him," and Luke says (Luke 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.

A leper came - Leprosies in those countries were seldom curable by natural means, any more than palsies or lunacy. Probably this leper, though he might not mix with the people, had heard our Lord at a distance. Mark 1:40; Luke 5:12.