Of whom it is witnessed that he liveth. He takes the silence respecting his death, as I have said, as an evidence of his life. This would not indeed hold as to others, but as to Melchisedec it ought rightly to be so regarded, inasmuch as he was a type of Christ. For as the spiritual kingdom and priesthood of Christ are spoken of here, there is no place left for human conjectures; nor is it lawful for us to seek to know anything farther than what we read in Scripture. But we are not hence to conclude that the man who met Abraham is yet alive, as some have childishly thought, for this is to be applied to the other person whom he represented, even the Son of God. And by these words the Apostle intended to show, that the dignity of Melchisedec's priesthood was to be perpetual, while that of the Levites was temporary. [1] For he thus reasons, -- those to whom the Law assigns tithes are dying men; by which it was indicated that the priesthood would some time be abrogated, as their life came to an end: but the Scripture makes no mention of the death of Melchisedec, when it relates that tithes were paid to him; so the authority of his priesthood is limited by no time, but on the contrary there is given an indication of perpetuity. And this is added for this purpose, lest a posterior law, as it is usual, should seem to take away from the authority of a former law. For it might have been otherwise objected and said, that the right which Melchisedec formerly possessed is now void and null, because God had introduced another law by Moses, by which he transferred the right to the Levites. But the Apostle anticipates this objection by saying, that tithes were paid to the Levites only for a time, because they did not live; but that Melchisedec, because he is immortal, retains even to the end what was once given to him by God.

Footnotes

1 - Critics often make a difficulty where is none. The obvious meaning of this verse is given by Calvin, -- continual succession, owing to death, betokened the unenduring character of the Levitical priesthood; but the perpetuity of that Melchisedec is proved by this, that he lives. To live often means to be perpetual; and to die intimates what is evanescent. The Levites were dying men, which showed the character of their office, Melchisedec is represented as not dying, which betokens that his office as a priest is perpetual. -- Ed.

And here men that die receive tithes - Another point showing the inferiority of the Levitical priesthood. They who thus received tithes, though by the right to do this they asserted a superiority over their brethren, were mortal. Like others, they would soon die; and in regard to the most essential things they were on a level with their brethren. They had no exemption from sickness, affliction, or bereavement, and death came to them with just as much certainty as he approached other men. The meaning of this is, that they are mortal like their brethren, and the design is to show the inferiority of their office by this fact. Its obvious and natural signification, in the apprehension of the great mass of readers, would not be, as the meaning has been supposed to be, that it refers "to the brief and mutable condition of the Levitical priesthood;" see Stuart in loco. Such an interpretation would not occur to anyone if it were not to avoid the difficulty existing in the correlative member of the verse where it is said of Melchizedek that "he liveth." But is the difficulty avoided then? Is it not as difficult to understand what is meant by his having an immutable and perpetual priesthood, as it is to know what is meant by his not dying literally? Is the one any more true than the other? Whatever difficulties, therefore, there may be, we are bound to adhere to the obvious sense of the expression here; a sense which furnishes also a just and forcible ground of comparison. It seems to me, therefore, that the simple meaning of this passage is, that, under the Levitical economy, those who received tithes were mortal, and were thus placed in strong contrast with him of whom it was said "he liveth." Thus, they were inferior to him - as a mortal is inferior to one who does not die; and thus also they must be inferior to him who was made a priest after the "order" of him who thus "lived."
But there - In contrast with "here" in the same verse. The reference here is to the account of Melchizedek, "Here," in the Levitical economy, men received tithes who are mortal; "there," in the account of Melchizedek, the case is different.
He receiveth them - Melchizedek - for so the connection evidently demands.
Of whom it is witnessed - Of whom the record is. There is not in Genesis, indeed, any direct record that he lives, but there is the absence of a record that he died, and this seems to have been regarded as in fact a record of permanency in the office; or as having an office which did not pass over to successors by the death of the then incumbent.
That he liveth - This is an exceedingly difficult expression, and one which has always greatly perplexed commentators. The fair and obvious meaning is, that all the record we have of Melchizedek is, that he was "alive;" or as Grotins says, the record is merely that he lived. We have no mention of his death. From anything that the record shows, it might appear that he continued to live on, and did not die. "Arguing from the record," therefore, there is a strong contrast between him and the Levitical priests, all of whom we know are mortal; Hebrews 7:23. The apostle is desirous of making out a contrast between them and the priesthood of Christ on "this point" among others, and in doing this, he appeals to the record in the Old Testament, and says that there was a case which furnished an intimation that the priestly office of the Messiah was not to pass over from him to others by death.
That case was, that he was expressly compared Psalm 110:4 with Melchizedek, and that in the account of Melchizedek there was no record of his death. As to the force of this argument, it must be admitted that it would strike a Jew more impressively than it does most readers now; and it may not be improbable that the apostle was reasoning from some interpretation of the passages in Genesis. 14: and Ps. cx., which was then prevalent, and which would then be conceded on all hands to be correct. If this was the admitted interpretation, and if there is no equivocation, or mere trick in the reasoning - as there cannot be shown to be - why should we not allow to the Jew a uniqueness of reasoning as we do to all other people? There are modes of reasoning and illustration in all nations, in all societies, and in all professions, which do not strike others as very forcible. The ancient philosophers had methods of reasoning which now seem weak to us; the lawyer often argues in a way which appears to be a mere quirk or quibble, and so the lecturer in science sometimes reasons.
The cause of all this may not be always that there is real quibble or quirk, in the mode of argumentation, but that he who reasons in this manner has in his view certain points which he regards as undisputed which do not appear so to us; or that he argues from what is admitted in the profession, or in the school where he is taught, which are not understood by those whom he addresses. To this should be added also the consideration, that Paul had a constant reference to the Messiah, and that it is possible that in his mind there was here a transition from the type to the antitype, and that the language which he uses may be stronger than if he had been speaking of the mere record of Melchizedek if he had found it standing by itself. Still his reasoning turns mainly on the fact that in the case of Melchizedek there was no one who had preceded him in that office, and that he had no successor, and, in regard to the matter in hand, it was all one as if he had been a perpetual priest, or had continued still alive.
(The reasoning in the whole passage is founded on the Scripture account of Melchizedek. He is not to be regarded absolutely, but typically. View him just as he appears in the record in Genesis, and the difficulty will be greatly lessened, if it do not altogether disappear. There, he is presented to us, in his typical character, as living. All notice of his death is studiously omitted with the express design, that, appearing only as a living priest, he might the better typify our immortal Redeemer. In this view, which indeed is so well brought out in the commentary above, "the apostle's argument unto the dignity, and pre-eminence of Melchizedek above the Levitical priests, in this instance, is of an "unquestionable evidence." For, consider Melchizedek, not in his natural being and existence, which belongs not unto this mystery, but in his Scripture being and existence, and he is immortal, always living, wherein he is more excellent than those who were always obnoxious to death in the exercise of their office" - Owen. McKnight, observing that the Greek verb ζη zē here is not in the present, but the imperfect of the indicative, translates - lived, a priest all his life, in contradistinction from those who ceased to be priests at a certain age. But whatever view may be taken of the passage, whatever solution of the difficulty may be adopted, apology for the mode of reasoning may well be spared. An inspired writer needs it not. All his reasoning has, doubtless, a solid basis in truth. It is impossible he should proceed on any peculiarities or modes of reasoning, but such as are strictly true, the accuracy of which might, any where, and at any time, be admitted, by those who had the means and patience for a right understanding of them.)

Here men that die receive tithes - The apostle is speaking of the ecclesiastical constitution of the Jews, which was standing at the time this epistle was written. Under the Jewish dispensation, though the priests were successively removed by death, yet they were as duly replaced by others appointed from the same family, and the payment of tithes was never interrupted. But as there is no account of Melchisedec ceasing to be a priest, or of his dying, he is represented as still living, the better to point him out as a type of Christ, and to show his priesthood to be more excellent than that which was according to the law, as an unchanging priesthood must be more excellent than that which was continually changing.
But there he receiveth them - The ὡδε, here, in the first clause of this verse refers to Mosaical institutions, as then existing: the εκει, there, in this clause refers to the place in Genesis (Genesis 14:20) where it is related that Abraham gave tithes to Melchisedec, who is still considered as being alive or without a successor, because there is no account of his death, nor of any termination of his priesthood.

And here men that die receive tithes, The priests and Levites were not only men, and mortal men, subject to death, but they did die, and so did not continue, by reason of death, Hebrews 7:24
but there he receiveth them, of whom it is witnessed that he liveth; which is to be understood of Melchizedek; who is not opposed to men, as if he was not a man, nor to mortal men, but to men that die; nor is he said to be immortal, but to live: and this may respect the silence of the Scripture concerning him, which gives no account of his death; and may be interpreted of the perpetuity of his priesthood, and of his living in his antitype Christ; and the testimony concerning him is in Psalm 110:4.

Second point of superiority: Melchisedec's is an enduring, the Levitical a transitory, priesthood. As the law was a parenthesis between Abraham's dispensation of promise of grace, and its enduring fulfilment at Christ's coming (Romans 5:20, Greek, "The law entered as something adscititious and by the way"): so the Levitical priesthood was parenthetical and temporary, between Melchisedec's typically enduring priesthood, and its antitypical realization in our ever continuing High Priest, Christ.
here--in the Levitical priesthood.
there--in the priesthood after the order of Melchisedec. In order to bring out the typical parallel more strongly, Paul substitutes, "He of whom it is witnessed that he liveth," for the more untypical, "He who is made like to Him that liveth." Melchisedec "liveth" merely in his official capacity, his priesthood being continued in Christ. Christ, on the other hand, is, in His own person, "ever living after the power of an endless life" (Hebrews 7:16, Hebrews 7:25). Melchisedec's death not being recorded, is expressed by the positive term "liveth," for the sake of bringing into prominence the antitype, Christ, of whom alone it is strictly and perfectly true, "that He liveth."

And here - In the Levitical priesthood. But there - In the case of Melchisedec. He of whom it is testified that he liveth - Who is not spoken of as one that died for another to succeed him; but is represented only as living, no mention being made either of his birth or death.