Deuteronomy 18:2

the LORD is their inheritance: The inheritance of the Levites was spiritual, not territorial or material. They possessed the Lord by giving their whole lives to his service. This idea is the remarkable reversal of the idea that the Lord possessed Israel (see 7:6).

Magistracy and ministry are two divine institutions of admirable use for the support and advancement of the kingdom of God among men. Laws concerning the former we had in the close of the foregoing chapter, directions are in this given concerning the latter. Land-marks are here set between the estates of the priests and those of the people.
I. Care is taken that the priests entangle not themselves with the affairs of this life, nor enrich themselves with the wealth of this world; they have better things to mind. They shall have no part nor inheritance with Israel, that is, no share either in the spoils taken in war or in the land that was to be divided by lot, Deu 18:1. Their warfare and husbandry are both spiritual, and enough to fill their hands both with work and profit and to content them. The Lord is their inheritance, Deu 18:2. Note, Those that have God for their inheritance, according to the new covenant, should not be greedy of great things in the world, neither gripe what they have nor grasp at more, but look upon all present things with the indifference which becomes those that believe God to be all-sufficient.
II. Care is likewise taken that they want not any of the comforts and conveniences of this life. Though God, who is a Spirit, is their inheritance, it does not therefore follow that they must live upon the air; no,
1. The people must provide for them. They must have their due from the people, Deu 18:3. Their maintenance must not depend upon the generosity of the people, but they must be by law entitled to it. He that is taught in the word ought in justice to communicate to him that teaches him; and he that has the benefit of solemn religious assemblies ought to contribute to the comfortable support of those that preside in such assemblies. (1.) The priests who in their courses served at the altar had their share of the sacrifices, namely, the peace-offerings, that were brought while they were in waiting: besides the breast and shoulder, which were appointed them before (Lev 7:32-34), the cheeks and maw are here ordered to be given them; so far was the law from diminishing what was already granted that it gave them an augmentation (2.) The first-fruits which arose within such a precinct were brought in, as it should seem, to the priests that resided among them, for their maintenance in the country; the first of their corn and wine for food, and the first of their fleece for clothing (Deu 18:4); for the priests who were employed to teach others ought themselves to learn, having food and raiment, to be therewith content. The first-fruits were devoted to God, and he constituted the priests his receivers; and if God reckons what is, in general, given to the poor, lent to him, to be repaid with interest, much more what is, in particular, given to the poor, lent to him, to be repaid with interest, much more what is, in particular, given to poor ministers. There is a good reason given for this constant charge upon their estates (Deu 18:5), because the Levites were chosen of God, and his choice must be owned and countenanced, and those honoured by us whom he honours; and because they stood to minister, and ought to be recompensed for their attendance and labour, especially since it was in the name of the Lord, by his warrant, in his service, and for his praise, and this charge entailed upon their seed for ever; those who were thus engaged and thus employed ought to have all due encouragement given them, as some of the most needful useful members of their commonwealth.
2. The priests must not themselves stand in one another's light. If a priest that by the law was obliged to serve at the altar only in his turn, and was paid for that, should, out of his great affection to the sanctuary, devote himself to a constant attendance there, and quit the ease and pleasure of the city in which he had his lot for the satisfaction of serving the altar, the priests whose turn it was to attend must admit him both to join in the work and to share in the wages, and not grudge him either the honour of the one or the profit of the other, though it might seem to break in upon them, Deu 18:6-8. Note, A hearty pious zeal to serve God and his church, though it may a little encroach upon a settled order, and there may be somewhat in it that looks irregular, yet ought to be gratified and not discouraged. He that appears to have a hearty affection to the sanctuary, and loves dearly to be employed in the service of it, in God's name let him minister; he shall be as welcome to God as the Levites whose course it was to minister, and should be so to them. The settling of the courses was intended rather to secure those to the work that were not willing to do so much than to exclude any that were willing to do more. And he that thus serves as a volunteer shall have as good pay as the pressed men, besides that which comes of the sale of his patrimony. The church of Rome obliges those who leave their estates to go into a monastery to bring the produce of their estates with them into the common stock of the monastery, for gain is their godliness; but here it is ordered that the pious devotee should reserve to himself the produce of his patrimony, for religion and the ministry were never appointed of God, however they have been abused by men, to serve a secular interest.

Deuteronomy 18:1-8

1. The priests the Levites, and all the tribe of Levi, shall have no part nor inheritance with Israel: they shall eat the offerings of the LORD made by fire, and his inheritance.

1. Non erit sacerdotibus Levitis: et toti tribui Levi portio et haereditas cum reliquo Israele, oblationes ignitas Jehovah, et haereditatem ejus comedent.

2. Therefore shall they have no inheritance among their brethren: the LORD is their inheritance, as he hath said unto them.

2. Et haereditas non erit illi in medio fratrum suorum, Jehova est haereditas ejus, quemadmodum dixit illi.

3. And this shall be the priest's due from the people, from them that offer a sacrifice, whether it be ox or sheep; and they shall give unto the priest the shoulder, and the two cheeks, and the maw.

3. Istud autem erit jus sacerdotum a populo, quoad sacrificantes sacrificium, sive bovem, sive agnum, dabunt sacerdoti armum, et maxillas, et ventriculum.

4. The firstfruit also of thy corn, of thy wine, and of thine oil, and the first of the fleece of thy sheep, shalt thou give him.

4. Primitias frumenti tui, vini tui, et olei tui, et primitias velleris ovium tuarum dabis illi.

5. For the LORD thy God hath chosen him out of all thy tribes, to stand to minister in the name of the LORD, him and his sons for ever.

5. Ipsum enim elegit Jehova Deus tuus e cunctis tribubus ruts, ut stet administrandum nomini Jehovae, ipse et filii ejus omnibus diebus.

6. And if a Levite come from any of thy gates out of all Israel, where he sojourned, and come with all the desire of his mind unto the place which the LORD shall choose;

6. Quum autem venerit Levita ex allqua portarum tuarum, ex omni Israele, ubi ipse peregrinabitur, et venerit toto desiderio animae suae ad locum quem elegerit Jehova:

7. Then he shall minister in the name of the LORD his God, as all his brethren the Levites do, which stand there before the LORD.

7. Ministrabit nomini Jehovae Dei sui, dent omnes fratres ejus Levitin qui stant illic coram Jehova.

8. They shall have like portions to eat, besides that which cometh of the sale of his patrimony.

8. Partera similem parti altorum comedent, praeter venditiones ejus ad partes.

1. The priests, the Levites, and all the tribe of Levi. This chapter contains three principal heads; for first, God shews that there was no reason why the Israelites should be aggrieved at paying tithes to the Levites, and at remitting the first-fruits and other oblations to the priests, since this tribe was deprived of their inheritance. Secondly, He obviates all quarrels, and prevents unlawful gains and pilferings, by assigning their just share to the priests and Levites. Thirdly, He defines how the oblations should be parted among them, and what part of the victims the priests were to take. As to the first clause, since God was as it were the lot of their inheritance, they justly claimed to themselves the right which he had transferred to them. If it were disagreeable to the people that their revenue should be tithed, God came as it were between, and declaring that it was His property in His right as King, appointed the Levites to be His stewards and collectors for receiving it. There was then no ground for any one to raise a dispute, unless he chose professedly to rob God. But this declaration often occurs; since it was of great importance that the people should be assured that God accounted as received by Himself what He had assigned to the Levites; not. only lest any portion should be withheld from them, but also that every one should willingly pay the lawful dues of God's ministers; and again, lest any should wickedly murmur because the first-fruits and some portion of the sacrifices were appropriated for the subsistence of the priests. Another reason is also expressed, why the honor assigned to the priests should be paid without grudging; viz., because God had appointed them to be the ministers of His service; but "the laborer is worthy of his hire."

3. And this shall be the priests' due. It is not only for the sake of the priests that God enumerates what He would have them receive, that they may obtain what is their own without murmuring or dispute; but He also has regard to the people, lest the priests should basely and greedily take more than their due; which sacred history relates to have been done by the sons of Eli, (1 Samuel 2:23,) for they had advanced to such a degree of licentiousness, that, like robbers, they seized violently on whatever their lust desired. Lest therefore they should give way to this gross covetousness, God prescribes to them certain limits, to which they were to confine themselves, so that if they transgressed them, it was easy for any of the people to convict them of avarice.

6. And if a Levite come. This third head more clearly explains what is elsewhere more obscurely declared; for God seemed to curtail from the Levites whatever He gave to the priests. But He now more distinctly places the priests in the first rank, yet so that they should admit the Levites on the score of their labor's to a share of the oblations. This is the sum of the law, that the Levites who remained at home, should be content with the tithes, and touch nothing of the other offerings; but that from whithersoever they should come to the sanctuary, they were to be accounted as ministers and take their proper place. By this law then, it was provided that none should be excluded on the ground of the intermission of their duties; and that the condition of those that dwelt elsewhere should not be worse than of those who lived at Jerusalem. For although they might reside in other cities, they did not altogether cease from their ministry, since they had other duties to perform besides that of sacrificing the victims. Yet those who entirely devoted themselves to the work of the sanctuary, were endowed by God with double honor; since it was by no means just that they should be defrauded of their maintenance, who bade adieu to domestic cares and labors, and occupied themselves totally in holy offices. That this distribution was not superfluous, will best appear from the narrative of Josephus, who relates that the [226] priests seized on the tithes by violence, and deprived the Levites of their subsistence by hostile measures.

Footnotes:

[226] About this time King Agrippa gave the high priesthood to Ismael, who was the son of Fabi. And such was the impudence and boldness that had seized on the high priests, that they had the hardiness to send their servants into the threshing-floors, to take away those tithes that were due to the priests; insomuch that it so fell out that the poorer sort of the priests died for want." -- Whiston's Josephus. Antiq. 20 ch. 8, sec. 8. See also ch. 9, sec. 2.

Therefore shall they have none inheritance among their brethren,.... Neither of the field, nor of the vineyard, as the above Targum, because provision was made for them otherwise, and especially because

the Lord is their inheritance, as he hath said unto them; see Gill on Numbers 18:20, which as it may be understood in a spiritual sense of their interest in God, as their covenant God, and of their enjoyment of him, and communion with him; so chiefly in a temporal sense of all those things in the sacrifices which the Lord claimed to himself, and these he gave unto them; so the same Targum interprets this of the twenty four gifts of the priesthood, enumerated Numbers 18:1.

i.e. The Lord’ s part and right, as was now said.