A covenant of salt - Compare the marginal reference. covenants were ordinarily cemented in the East by the rites of hospitality; of which salt was the obvious token, entering as it does into every article of diet. It indicates perpetuity: compare Leviticus 2:13 note.

It is a covenant of salt - That is, an incorruptible, everlasting covenant. As salt was added to different kinds of viands, not only to give them a relish, but to preserve them from putrefaction and decay, it became the emblem of incorruptibility and permanence. Hence, a covenant of salt signified an everlasting covenant. We have already seen that, among the Asiatics, eating together was deemed a bond of perpetual friendship; and as salt was a common article in all their repasts, it may be in reference to this circumstance that a perpetual covenant is termed a covenant of salt; because the parties ate together of the sacrifice offered on the occasion, and the whole transaction was considered as a league of endless friendship. See the note on Leviticus 2:13.

All the heave offerings of the holy things,.... All before mentioned, and whatsoever comes under that name:

which the children of Israel offer unto the Lord; either by his commandment, or of their own freewill:

have I given thee, and thy sons, and thy daughters with thee, by a statute for ever: so providing for their maintenance by an irrepealable law as long as their priesthood lasted, even until the Messiah should come:

it is a covenant of salt for ever before the Lord unto thee, and thy seed with thee: an incorruptible, inviolable, durable covenant, which should last for ever, even until the Gospel dispensation or world to come should take place; and it would remain ever before the Lord in his sight, who would take care it should never be made void, but stand fast with Aaron and his posterity as long as his priesthood endured.

"All the holy heave-offerings" are not the thank-offerings (Knobel), but, as in Numbers 18:8, all the holy gifts enumerated in Numbers 18:9-18. Jehovah gives these to the priests as an eternal claim. "An eternal covenant of salt is this before Jehovah," for Aaron and his descendants. A "covenant of salt;" equivalent to an indissoluble covenant, or inviolable contract (see at Leviticus 2:13).

All the heave offerings of the holy things, which the children of Israel offer unto the LORD, have I given thee, and thy sons and thy daughters with thee, by a statute for ever: it is a covenant {k} of salt for ever before the LORD unto thee and to thy seed with thee.

(k) That is, sure, stable and incorruptible.

18:19 A covenant of salt - A durable and perpetual covenant; so called here and 2Ch 13:5, either, because salt is a sign of incorruption, as being of singular use to preserve things from corruption: or, because it is ratified on their part by salt, which is therefore called the salt of the covenant, for which the priests were obliged to take care, that it should never be lacking from any meat - offering, Lev 2:13. And this privilege conferred upon the priests is called a covenant because it is given them conditionally, upon condition of their service, and care about the worship of God.

19. it is a covenant of salt-that is, a perpetual ordinance. This figurative form of expression was evidently founded on the conservative property of salt, which keeps meat from corruption; and hence it became an emblem of inviolability and permanence. It is a common phrase among Oriental people, who consider the eating of salt a pledge of fidelity, binding them in a covenant of friendship. Hence the partaking of the altar meats, which were appropriated to the priests on condition of their services and of which salt formed a necessary accompaniment, was naturally called "a covenant of salt" (Le 2:13).

18:8-19 All believers are spiritual priests, and God has promised to take care of them. Godliness has the promise of the life that now is. And from the provision here made for the priests, the apostle shows that it is the duty of christian churches to maintain their ministers. Scandalous maintenance makes scandalous ministers. The priests were to be wholly devoted to their ministry, not diverted from it, or disturbed in it, by worldly care or business. Also, that they might be examples of living by faith, not only in God's providence, but in his ordinances. The best should be offered for the first-fruits unto the Lord. Those who think to save, by putting God off with the refuse, deceive themselves, for God is not mocked.