The laxity on these points ascribed to Moses is, however, less than has been supposed. At Mount Sinai he certainly did appoint the "young men of the children of Israel"[90] to slaughter the beasts for sacrifice; but he reserved for himself, a Levite, the sprinkling of the blood on the altar.[91] He also made Joshua his servant, an Ephraimite, the keeper of the sanctuary; but even under the Levitical law, a priest's slave was reckoned to be of his household and could eat of the holy things. These were not very great laxities, and there is nothing in them to make us suppose that a regular priesthood did not exist from Sinai. Moreover, that a special place should be assigned to Aaron and his sons was natural. He was the brother of Moses, and would be the natural representative of the tribe, since Moses was removed from it as being leader of all. Everything therefore concurs to confirm the Biblical view that the Levitic priesthood had its origin at Sinai, and that at the chief sanctuary and oracle the chief place in the priesthood fell to Aaron and his sons. Worship at other sanctuaries was permitted, and there the heads of households may have performed priestly functions, or in later times in Canaan some other Levitic families; but that there was a central sanctuary in the hands of Levitic priests, among whom the family of Aaron had a chief place, is what the circumstances, the historical data we have, and all historical analogy alike demand.

For the discharge of their sacred functions certain dues were doubtless assigned to the priests, and the Levites sharing in the subordinate duties of the sanctuary would share also in the emoluments. In other respects Levi in the wilderness would differ in nothing from other tribes. But in preparation for the arrival in Canaan, it was decreed that Levi should "have no part or inheritance in Israel." Yahweh was to be their inheritance.

The point to notice here is that this tribe was to retain the nomadic life when the other tribes became agricultural. The reason for it is plain. That ancient manner of life was looked upon as superior in a religious aspect to the agricultural life. In the first place, the ancestral life of Israel had been of that kind. Abraham, Isaac, and Jacob had been heads of nomadic families or tribes; and the pure and peaceful religious life, the intimate communion with God which they enjoyed, always dominated the imagination of the pious Israelite. Moreover the fundamental revelation had come to Moses when he was a shepherd in the waste. Further, the life of the shepherd is necessarily less continuously busy than that of the agriculturist; it has, therefore, more scope in it for contemplation; and in many countries and at various times shepherds have been a specially thoughtful, as well as a specially pious class. But, perhaps the chief reason was that the shepherd life was not only simple and frugal in itself, but it was also by its very conditions free from some of the greatest dangers to which the religious life of the Israelite in Canaan was exposed. When the bulk of the people adopted the settled life, they were not only thrown among the Canaanites, but they went to school them in all that concerned elaborate agriculture. This necessarily made the intercourse and connection between the two peoples extremely intimate, and was fruitful in evil results. From this the semi-nomadic portions of the people were to a great extent free, and they would seem to have been regarded as the guardians of a higher life and a purer tradition than others. They represented to the popular mind the Israel of ancient days, which had known nothing of the vices of cities, and in which the pure uncorrupted religion of Yahweh had held exclusive sway.

A remarkable narrative of the Old Testament establishes this. When Jehu was engaged in his sanguinary suppression of the house of Ahab, and the Baal-worship which they had introduced, we read in 2 Kings x. 15 ff. that he lighted on Jonadab the son of Rechab coming to meet him. This Jonadab was the chief of the Rechabites, a nomadic clan, who were bound by oath to drink no wine, nor to build houses, nor sow seed, nor plant vineyards, and to dwell in tents all their days (Jer. xxxv. 6, 7). This was clearly intended as a protest against the prevailing corruption of manners, and was founded on a special zeal for the uncorrupted religion of Yahweh. Recognising Jonadab's position as a champion of true religion, Jehu anxiously seeks his approval and co-operation. He says, "Is thine heart right, as my heart is with thy heart?" And Jonadab answered, "It is." "If it be," said Jehu, "give me thine hand." And he gave him his hand, and he took him up to him into the chariot. And he said, "Come with me, and see my zeal for Yahweh." At a much later time, Jeremiah, at the Divine command, used the faithfulness of these nomads to the ordinances of their chiefs to put to shame the unfaithfulness of Israel to Yahweh's ordinances; and promises (Jer. xxxv. 19) that because of it "Jonadab the son of Rechab shall never want a man to stand before Yahweh," i.e. as His servant. The Nazarites, again, were in some measure an indication of the same thing. Their rigorous abstinence from the fruit of the vine (the special sign and gift of a settled life in a country like Palestine) was their great distinguishing mark, as persons peculiarly set apart to the service of God. Something analogous is seen in that other desert faith, Mohammedanism. When the great reformer, Abd-el-Wahab, attempted to bring back Islam to its primitive power, he fell back largely upon the simplicity of the desert life, though he did not insist upon the abandonment of agriculture and fixed habitations.

It is, therefore, not surprising that the priestly tribe was kept to the nomadic life by the ordinance that they should not have a portion in the distribution of the Canaanite territory. But according to the narrative of the attack upon Shechem by Levi and Simeon, and the verses in the blessing of Jacob (Gen. xlix.) dealing with these tribes, the course of history reinforced this command. Whether the treachery at Shechem occurred, as the Genesis narrative places it, before the Exodus, when Israel was only a family, or was an incident in the history of the two tribes after Canaan had been invaded, as many critics think,[92] the significance of it is that because of an historical exhibition of fierce and intolerant zeal on the part of Levi and Simeon, which the other tribes would not defend, their settlement in that part of the land was rendered difficult, if not impossible. Hence Simeon had to seek other settlements, while Levi fell back to the position assigned to it by its priestly character. It is not a valid exception to this view—which reconciles the two statements that Levi had no inheritance with the other tribes because of its specially near relation to Yahweh, and also because of its cruel treachery at Shechem—that a priestly tribe is likely to have been not more, but rather less, fierce than the others. That would entirely depend upon the cause or occasion which called out the fierceness. In all that concerned religion Levi would naturally be more inclined to extreme measures than the other tribes, and in this case the higher morality, secured by the separateness of Israel, might easily appear to be at stake.[93] It is, therefore, quite credible that the excessive vengeance taken should have been planned mainly by Levi, and that the resulting hatred should have broken up Simeon, and driven back Levi with emphasis to its higher call.

In any case there never was again any doubt that the Levites were to be excluded from the number of land-owning tribes. Even in the legislation regarding the forty-eight priestly cities this principle asserts itself. The keeping of sheep and cattle on the pastures, which were the only lands attached to these cities, was to be the Levites' only secular occupation, and they were neither to own nor work agricultural land. But to compensate for any hardship this arrangement might bring with it, the Levites, as the special servants of Yahweh, were to have Him for their inheritance, i.e. as we have seen, the dues coming to Yahweh were to become the property of the Levites in great part. I say in great part, because the gift to the Levites exclusively of a tithe of the income of the people is thought by many to be only a late provision.

After Canaan had been conquered, the state of things in connection with the priesthood would be something like this. The tent with the ark would be the principal sanctuary, served by a hereditary Levitic priesthood, at the head of which would be a descendant of Aaron. The tribe of Levi, being nomadic, would probably encamp in the neighbourhood of the central sanctuary in part, and recruits for the priestly work would be taken occasionally from them, while other sections would gravitate to the neighbourhood of other sanctuaries. As we see from the story of Micah in Judges, it was considered desirable to have a Levite for priest everywhere, and consequently there would arise at all the High Places Levitic priesthoods, most probably in part hereditary. But notwithstanding their dues, the bulk of the tribe, being nomads, would be looked upon by the agricultural population as poor, just as the Bedouin, in Palestine now are, comparatively speaking, very poor. This state of things would correspond entirely with what Deuteronomy tells us; and after that legislation the position of the Levites as a priestly body would be more assured than ever. In the post-exilic period all that had been regulated by practice in earlier days found written expression. Differentiation of function was minutely carried out. The priesthood was confined rigorously to the Aaronic house, and the other Levites were given to them as attendants. In this way the whole Levitic system was introduced, and with the exclusive altar came the exclusive priesthood. So far as I can see, it is only by some such hypothesis that justice can be done to all the statements of Scripture; and considering the elastic nature of Old Testament law, there is nothing improbable in it. In any case there is an amount of evidence of various kinds for the Mosaic origin of the Levitic, and even the Aaronic priesthood, which no proof of irregularities can overturn.

In the Divinely sanctioned arrangements of the Old Testament Church, therefore, the existence of a body of ecclesiastical persons, having little share in the ordinary pursuits of their neighbours, and dependent upon their clerical duties for a large part of their maintenance, was deemed necessary to secure the continuity of worship and religious belief. As has been already pointed out, the priesthood was necessarily more conservative than progressive. As an institution, it was suited rather to gather up and perpetuate the results of religious movements otherwise originated, than to originate them itself. But in that sphere it was an absolutely necessary element in the life of Israel. Difficult as it was to permeate the people with the truths of revealed religion, it would have been impossible without the services of the priestly tribe. Wherever they went they were a visible embodiment of the demand for faithfulness to Yahweh, and, with all their aberrations, they probably lived at a higher spiritual level than the average layman. As has been well said, though Malachi had much reason to complain of the priests in his own day, his estimate of what Levi had been in the past is no exaggeration (ii. 6): "The law of truth was in his mouth, and unrighteousness was not found in his lips: he walked with Me in peace and uprightness, and did turn many away from iniquity." But such a body as the Levites could not have been kept thus spiritually alive, unless the members of it had lived somewhat aloof from the strifes and envies of the market-place, and this they could not have done had they not lived by their sacred function. The prophets, under the power and impulse of new truth adapted to their own time, did not need this protection; consequently some of them were called from ordinary secular work—from the plough, like Elisha, or from the midst of the rich and highborn inhabitants of Jerusalem, like Isaiah. If one may so say, they were men of religious genius; while the bulk of the priests and Levites must always have been commonplace men in comparison. Yet even of the prophets a number were trained in the nomadic life; others were priests who were shut off also from agriculture. Clearly, therefore, some measure of separation from the full pulsing life of the world was, even in the most favourable circumstances, helpful in developing religious character. For the ordinary average ecclesiastic it was indispensable; and that he should exist, and should live at as high a level as possible, was as much a condition of Israel's discharge of her great mission, as that the voice of the prophet should be heard at all the great turning-points of her career.

The modern tendency in Old Testament study is to depreciate the priest and to exalt the prophet, just as in ecclesiastical life we tend to make much of those who are or give themselves out to be religious reformers and thinkers, and to make little of the ordinary parish or congregational ministry. But the good done by the latter is, and must be, for each individual generation more than that done by the former. No one can estimate too highly the conserving and elevating effect of a faithful high-minded spiritual minister. Often without genius either intellectual or religious, without much speculative power, with so firm a hold of the old truth, which has been their own guiding star, that they cannot readily see the good in anything new, such men, when faithful to the light they have, are the stable, restful, immediately effective element in all Church life. And such a body can be best spiritualised by being separated somewhat from the stress and strain of competition in the race of life. Being what they are, the necessity of taking their full part in the business of the world would inevitably secularise them, to the great and lasting damage of all spiritual interests. For though to modern students of Old Testament religion, who are interested most in its growth and progress towards its consummation in Christianity, the prophet is by far the most interesting figure, to the ancient people itself it must have seemed that the priests and Levites, if they in any degree deserved Malachi's eulogy, were the entirely indispensable element in their religious life. They gave the daily bread of religion to the people. They embodied the principles which came to them from prophetic inspiration in ceremonies and institutions; they treasured up whatever had been gained, and kept the people nurtured in it and admonished by it. In short, they prepared the soil and cultivated the roots from which alone the consummate flower of prophecy could spring; and when the voice of prophecy was dying away they brought the piety of the average Israelite to the highest point it ever reached.

In modern times the necessity for such a body of special churchmen is challenged from two opposite sides. There is, on the one hand, the body of over-spiritualised believers who abhor organisation, and the machinery of organisation, as if it were an intolerable evil. Conscious very often of quick spiritual impulse and vivid life in themselves, they fret against the slow movements of large bodies of men; they separate themselves from all the organised Churches and reject a regular ministry. All the Lord's people are now, under the Christian dispensation, priests and prophets, they say, and a separate paid ministry in sacred things they refuse to hear of. For spiritual nourishment they rely solely upon the prophetic gifts of their members, and are satisfied that thus they are preparing the way for the universal prevalence of a higher form of Church life. But, so far as can be judged, their experiment has not prospered, nor is it likely to do so. For these separatist Christians have found that spiritual life, like other kinds of life, cannot express itself without an organism. That implies organisation; and though they do with less of it than other Christians, still they are often driven into arrangements which really bring back the regular ministry with its separate position; and in other respects they are saved from the inconveniences they have fled from, only by their want of success. If their system ever became general, it would necessarily drift into organisation, for only at that price can any coherent, continuous, and lasting effect be produced. Unfettered by the dull, the critical, and the judicious, the impulsive and enthusiastic would always be outrunning the possibilities of the present time. In the interests of the best, they would be continually ignoring or destroying the good. To prevent that, a special body of religious men set apart for sacred services, and freed from the rough struggle for existence so far as a maintenance from funds devoted to religious purposes can free them, is one of the best provisions known. Where in the mass they are really religious men, they secure that the pressure upward, which the Church exerts upon the lives of its own members and upon the community in general, shall be effective to the highest degree then possible, and shall be exerted in the directions in which such pressure will most fully answer to the needs and aspirations of the time. Where, on the contrary, the mass of them are secularised, they no doubt are a power for evil; but the contrast between their profession and their practice in that case is so shocking, that unless they be supported by the "dead hand" of endowments with no living spiritual demand behind them, they soon sink by their own weight, to give place to a better type. And even when they are thus supported, though unfaithful, their calling in name at least remains spiritual, and sooner than the other elements in the nation they are apt to be stirred by breathings of a new life.