But if there be included in these regulations a sanitary intent, this certainly does not exhaust their significance. Rather, if this be admitted, it only furnishes the basis, as in the case of the laws concerning clean and unclean meats, for still more profound spiritual teaching. For, as remarked before, it is one of the fundamental thoughts of the Mosaic law, that death, as being the extreme visible manifestation of the presence of sin in the race, and a sign of the consequent holy wrath of God against sinful man, is inseparably connected with legal uncleanness. But all disease is a forerunner of death, an incipient dying; and is thus, no less really than actual death, a visible manifestation of the presence and power of sin working in the body through death. And yet it is easy to see that it would have been quite impracticable to carry out a law that therefore all disease should render the sick person ceremonially unclean; while, on the other hand, it was of consequence that Israel, and we as well, should be kept in remembrance of this connection between sin and disease, as death beginning. What could have been more fitting, then, than this, that the one disease which, without exaggeration, is of all diseases the most loathsome, which is most manifestly a visible representation of that which is in a measure true of all disease, that it is death working in life, that disease which is, not in a merely rhetorical sense, but in fact, a living image of death,—should be selected from all others for the illustration of this principle: to be to Israel and to us, a visible, perpetual, and very awful parable of the nature and the working of sin?

And this is precisely what has been done. This explains, as sanitary considerations alone do not, not merely the separation of the leper from the holy people, but also the solemn symbolism which required him to assume the appearance of one mourning for the dead; as also the symbolism of his cleansing, which, in like manner, corresponded very closely with that of the ritual of cleansing from defilement by the dead. Hence, while all sickness, in a general way, is regarded in the Holy Scriptures as a fitting symbol of sin, it has always been recognised that, among all diseases, leprosy is this in an exceptional and pre-eminent sense. This thought seems to have been in the mind of David, when, after his murder of Uriah and adultery with Bathsheba, bewailing his iniquity (Psalm li. 7), he prayed, "Purge me with hyssop, and I shall be clean." For the only use of the hyssop in the law, which could be alluded to in these words, is that which is enjoined (xiv. 4-7) in the law for the cleansing of the leper, by the sprinkling of the man to be cleansed with blood and water with a hyssop branch.

And thus we find that, again, this elaborate ceremonial contains, not merely an instructive lesson in public sanitation, and practical suggestions in hygiene for our modern times; but also lessons, far more profound and momentous, concerning that spiritual malady with which the whole human race is burdened,—lessons therefore of the gravest personal consequence for every one of us.

From among all diseases, leprosy has been selected by the Holy Ghost to stand in the law as the supreme type of sin, as seen by God! This is the very solemn fact which is brought before us in this chapter. Let us well consider it, and see that we receive the lesson, however humiliating and painful, in the spirit of meekness and penitence. Let us so study it that we shall with great earnestness and true faith resort to the true and heavenly High Priest, who alone can cleanse us of this sore malady. And in order to do this, we must carefully consider what is involved in this type.

In the first place, leprosy is undoubtedly selected to be a special type of sin, on account of its extreme loathsomeness. Beginning, indeed, as an insignificant spot, "a bright place," a mere scale on the skin, it goes on spreading, progressing ever from worse to worse, till at last limb drops from limb, and only the hideous mutilated remnant of what was once a man is left. A vivid picture of the horrible reality has been given by that veteran missionary and very accurate observer, the Rev. William Thomson, D.D., who writes thus: "As I was approaching Jerusalem, I was startled by the sudden apparition of a crowd of beggars, sans eyes, sans nose, sans hair, sans everything.... They held up their handless arms, unearthly sounds gurgled through throats without palates,—in a word, I was horrified."[29] Too horrible is this to be repeated or thought of? Yes! But then all the more solemnly instructive is it that the Holy Spirit should have chosen this disease, the most loathsome of all, as the most fatal of all, to symbolise to us the true nature of that spiritual malady which affects us all, as it is seen by the omniscient and most holy God.

But it will very naturally be rejoined by some; Surely it were gross exaggeration to apply this horrible symbolism to the case of many who, although indeed sinners, unbelievers also in Christ, yet certainly exhibit truly lovely and attractive characters. That this is true regarding many who, according to the Scriptures, are yet unsaved, cannot be denied. We read of one such in the Gospel,—a young man, unsaved, who yet was such that "Jesus looking upon him loved him" (Mark x. 21). But this fact only makes the leprosy the more fitting symbol of sin. For another characteristic of the disease is its insignificant and often even imperceptible beginning. We are told that in the case of those who inherit the taint, it frequently remains quite dormant in early life, only gradually appearing in later years. How perfectly the type, in this respect, then, symbolises sin! And surely any thoughtful man will confess that this fact makes the presence of the infection not less alarming, but more so. No comfort then can be rightly had from any complacent comparison of our own characters with those of many, perhaps professing more, who are much worse than we, as the manner of some is. No one who knew that from his parents he had inherited the leprous taint, or in whom the leprosy as yet appeared as only an insignificant bright spot, would comfort himself greatly by the observation that other lepers were much worse; and that he was, as yet, fair and goodly to look upon. Though the leprosy were in him but just begun, that would be enough to fill him with dismay and consternation. So should it be with regard to sin.

And it would so affect such a man the more surely, when he knew that the disease, however slight in its beginnings, was certainly progressive. This is one of the unfailing marks of the disease. It may progress slowly, but it progresses surely. To quote again the vivid and truthful description of the above-named writer, "It comes on by degrees in different parts of the body: the hair falls from the head and eyebrows; the nails loosen, decay, and drop off; joint after joint of the fingers and toes shrinks up and slowly falls away; the gums are absorbed, and the teeth disappear; the nose, the eyes, the tongue, and the palate are slowly consumed; and, finally, the wretched victim sinks into the earth and disappears."

In this respect again the fitness of the disease to stand as an eminent type of sin is undeniable. No man can morally stand still. No one has ever retained the innocence of childhood. Except as counteracted by the efficient grace of the Holy Spirit in the heart, the Word (2 Tim. iii. 13) is ever visibly fulfilled, "evil men wax worse and worse." Sin may not develop in all with equal rapidity, but it does progress in every natural man, outwardly or inwardly, with equal certainty.

It is another mark of leprosy that sooner or later it affects the whole man; and in this, again, appears the sad fitness of the disease to stand as a symbol of sin. For sin is not a partial disorder, affecting only one class of faculties, or one part of our nature. It disorders the judgment; it obscures our moral perceptions; it either perverts the affections, or unduly stimulates them in one direction, while it deadens them in another; it hardens and quickens the will for evil, while it paralyses its power for the volition of that which is holy. And not only the Holy Scripture, but observation itself, teaches us that sin, in many cases, also affects the body of man, weakening its powers, and bringing in, by an inexorable law, pain, disease, and death. Sooner or later, then, sin affects the whole man. And for that reason, again, is leprosy set forth as its pre-eminent symbol.