Here, I. It is supposed that the plague of the leprosy was not an incurable disease. Uzziah's indeed continued to the day of his death, and Gehazi's was entailed upon his seed; but Miriam's lasted only seven days: we may suppose that it often wore off in process of time. Though God contend long, he will not contend for ever.

II.The judgment of the cure, as well as that of the disease, was referred to the priest. He must go out of the camp to the leper, to see whether his leprosy was healed, Lev 14:3. And we may suppose the priest did not contract any ceremonial uncleanness by coming near the leper, as another person would. It was in mercy to the poor lepers that the priests particularly had orders to attend them, for the priests' lips should keep knowledge; and those in affliction have need to be instructed both how to bear their afflictions and how to reap benefit by them, have need of the word, in concurrence with the rod, to bring them to repentance; therefore it is well for those that are sick if they have these messengers of the Lord of hosts with them, these interpreters, to show unto them God's uprightness, Job 33:23. When the leper was shut out, and could not go to the priests, it was well that the priests might come to him. Is any sick? Let him send for the elders, the ministers, Jam 5:14. If we apply it to the spiritual leprosy of sin, it intimates that when we withdraw from those who walk disorderly, that they may be ashamed, we must not count them as enemies, but admonish them as brethren, Th2 3:15. And also that when God by his grace has brought those to repentance who were shut out of communion for scandal, they ought with tenderness, and joy, and sincere affection, to be received in again. Thus Paul orders concerning the excommunicated Corinthian that when he had given evidences of his repentance they should forgive him, and comfort him, and confirm their love towards him, Co2 2:7, Co2 2:8. And ministers are entrusted by our Master with the declarative power of loosing as well as binding: both must be done with great caution and deliberation, impartially and without respect of persons, with earnest prayer to God for directions, and a sincere regard to the edification of the body of Christ, due care being always taken that sinners may not be encouraged by an excess of lenity, nor penitents discouraged by an excess of severity. Wisdom and sincerity are profitable to direct in this case.

III.If it was found that the leprosy was healed, the priest must declare it with a particular solemnity. The leper or his friends were to get ready two birds caught for this purpose (any sort of wild birds that were clean), and cedar-wood, and scarlet, and hyssop; for all these were to be used in the ceremony. 1. A preparation was to be made of blood and water, with which the leper must be sprinkled. One of the birds (and the Jews say, if there was any difference, it must be the larger and better of the two) was to be killed over an earthen cup of spring water, so that the blood of the bird might discolour the water. This (as some other types) had its accomplishment in the death of Christ, when out of his pierced side there came water and blood, Joh 19:34. Thus Christ comes into the soul for its cure and cleansing, not by water only, but by water and blood, Jo1 5:6. 2. The living bird, with a little scarlet wool, and a bunch of hyssop, must be fastened to a cedar stick, dipped in the water and blood, which must be so sprinkled upon him that was to be cleansed, Lev 14:6, Lev 14:7. The cedar-wood signified the restoring of the leper to his strength and soundness, for that is a sort of wood not apt to putrefy. The scarlet wool signified his recovering a florid colour again, for the leprosy made him white as snow. And the hyssop intimated the removing of the disagreeable scent which commonly attended the leprosy. The cedar the stateliest plant, and hyssop the meanest, are here used together in this service (see Kg1 4:33); for those of the lowest rank in the church may be of use in their place, as well as those that are most eminent, Co1 12:2. Some make the slain bird to typify Christ dying for our sins, and the living bird Christ rising again for our justification. The dipping of the living bird in the blood of the slain bird intimated that the merit of Christ's death was that which made his resurrection effectual for our justification. He took his blood with him into the holy place, and there appeared a lamb as it had been slain. The cedar, scarlet wool, and hyssop, must all be dipped in the blood; for the word and ordinances, and all the operations of the Spirit, receive their efficacy for our cleansing from the blood of Christ. The leper must be sprinkled seven times, to signify a complete purification, in allusion to which David prays, Wash me thoroughly, Psa 51:2. Naaman was directed to wash seven times, Kg2 5:10. 3. The living bird was then to be let loose in the open field, to signify that the leper, being cleansed, was now no longer under restraint and confinement, but might take his liberty to go where he pleased. But this being signified by the flight of a bird towards heaven was an intimation to him henceforward to seek the things that are above, and not to spend this new life to which God had restored him merely in the pursuit of earthly things. This typified that glorious liberty of the children of God to which those are advanced who through grace are sprinkled from an evil conscience. Those whose souls before bowed down to the dust (Psa 44:25), in grief and fear, now fly in the open firmament of heaven, and soar upwards upon the wings of faith and hope, and holy love and joy. 4. The priest must, upon this, pronounce him clean. It was requisite that this should be done with solemnity, that the leper might himself be the more affected with the mercy of God to him in his recovery, and that others might be satisfied to converse with him. Christ is our priest, to whom the Father has committed all judgment, and particularly the judgment of the leprosy. By his definitive sentence impenitent sinners will have their everlasting portion assigned them with the unclean (Job 36:14), out of the holy city; and all that by his grace are cured and cleansed shall be received into the camp of the saints, into which no unclean thing shall enter. Those are clean indeed whom Christ pronounces so, and they need not regard what men say of them. But, though Christ was the end of this law for righteousness, yet being in the days of his flesh made under the law, which as yet stood unrepealed, he ordered those lepers whom he had cured miraculously to go and show themselves to the priest, and offer for their cleansing according to the law, Mat 8:4; Luk 17:14. The type must be kept up till it was answered by its antitype. 5. When the leper was pronounced clean, he must wash his body and his clothes, and shave off all his hair (Lev 14:8), must still tarry seven days out of the camp, and on the seventh day must do it again, Lev 14:9. The priest having pronounced him clean from the disease, he must make himself as clean as ever he could from all the remains of it, and from all other defilements, and he must take time to do this. Thus those who have the comfort of the remission of their sins, by the sprinkling of the blood of Christ upon their consciences, must with the utmost care and caution cleanse themselves from all filthiness both of flesh and spirit, and thoroughly purge themselves from their old sins; for every one that hath this hope in him will be concerned to purify himself.

Shall let the living bird loose - The Jews teach that wild birds were employed on this occasion, no tame or domestic animal was used. Mr. Ainsworth piously conjectures that the living and dead birds were intended to represent the death and resurrection of Christ, by which an atonement was made to purify the soul from its spiritual leprosy. The bird let loose bears a near analogy to the scapegoat. See Leviticus 16.

And he shall sprinkle upon him that is to be cleansed from the leprosy seven times,.... With the hyssop fastened to the cedar stick, with the scarlet wool or thread bound about it, dipped into the blood and water in the earthen vessel; to which the psalmist alludes, Psa 51:7; the Egyptians had a great notion of "hyssop", as of a purifying nature, and therefore used to eat it with bread, to take off the strength of that (d): upon what part of the leper this sprinkling was made is not said; the Targum of Jonathan says, upon the house of his face, that is, upon the vail that was over his face: but in the Misnah (e) it is said to be on the back of his hand; and so Gersom, though some say it was on his forehead; and sprinkling was typical of Christ's blood of sprinkling, and of the application of it, and of sharing in all the blessings of it; and this was done seven times, to denote the thorough and perfect cleansing of him, and of every part, every faculty of the soul, and every member of the body, and that from all sin, and the frequent application of it: the last mentioned writer says, at every sprinkling there was a dipping, and that the sense is, that he should sprinkle and dip seven times, as Naaman the Syrian leper did in Jordan; but of the washing of the leper mention is afterwards made:

and shall pronounce him clean; from his leprosy, and so fit for civil and religious conversation, to come into the camp or city, and into the tabernacle:

and shall let the living bird loose into the open field; as a token of the freedom of the leper, and that he was at liberty to go where he pleased: the Misnic doctors say (f), when he came to let go the living bird, he did not turn its face neither to the sea, nor to the city, nor to the wilderness, as it is said, "but he shall let go the living bird out of the city into the open field", as in Lev 14:53; the Targum of Jonathan here adds, if the man should be prepared to be smitten with the leprosy again, the live bird may return to his house the same day, and be fit to be eaten, but the slain bird he shall bury in the sight of the leper: some say, if the bird returned ever so many times, it was to be let go again: this may be a figure of the resurrection of Christ from the dead, and of his justification upon it, as the head and representative of his people, and of their free and full discharge from guilt, condemnation, and death, through him, and of his and their being received up into heaven, and whither their hearts should be directed, in affection and thankfulness for their great deliverance and salvation; see Ti1 3:16.

(d) Chaeremon apud Porphyr. de Abstinentia, l. 4. sect. 6. (e) Ut supra. (Misn. Negaim, c. 11. sect. 4.) (f) Ib. sect. 2.

the priest shall command that one of the birds be killed . . . over running water--As the blood of a single bird would not have been sufficient to immerse the body of another bird, it was mingled with spring water to increase the quantity necessary for the appointed sprinklings, which were to be repeated seven times, denoting a complete purification. (See Kg2 5:10; Psa 51:2; Mat 8:4; Luk 5:14). The living bird being then set free, in token of the leper's release from quarantine, the priest pronounced him clean; and this official declaration was made with all solemnity, in order that the mind of the leper might be duly impressed with a sense of the divine goodness, and that others might be satisfied they might safely hold intercourse with him. Several other purifications had to be gone through during a series of seven days, and the whole process had to be repeated on the seventh, ere he was allowed to re-enter the camp. The circumstance of a priest being employed seems to imply that instruction suitable to the newly recovered leper would be given, and that the symbolical ceremonies used in the process of cleansing leprosy would be explained. How far they were then understood we cannot tell. But we can trace some instructive analogies between the leprosy and the disease of sin, and between the rites observed in the process of cleansing leprosy and the provisions of the Gospel. The chief of these analogies is that as it was only when a leper exhibited a certain change of state that orders were given by the priest for a sacrifice, so a sinner must be in the exercise of faith and penitence ere the benefits of the gospel remedy can be enjoyed by him. The slain bird and the bird let loose are supposed to typify, the one the death, and the other the resurrection of Christ; while the sprinklings on him that had been leprous typified the requirements which led a believer to cleanse himself from all filthiness of the flesh and spirit, and to perfect his holiness in the fear of the Lord.