7:4-10 That High Priest who should afterward appear, of whom Melchizedec was a type, must be much superior to the Levitical priests. Observe Abraham's great dignity and happiness; that he had the promises. That man is rich and happy indeed, who has the promises, both of the life that now is, and of that which is to come. This honour have all those who receive the Lord Jesus. Let us go forth in our spiritual conflicts, trusting in his word and strength, ascribing our victories to his grace, and desiring to be met and blessed by him in all our ways.
8. 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 (Ro 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" (Heb 7:16, 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."