7:11-25 The priesthood and law by which perfection could not come, are done away; a Priest is risen, and a dispensation now set up, by which true believers may be made perfect. That there is such a change is plain. The law which made the Levitical priesthood, showed that the priests were frail, dying creatures, not able to save their own lives, much less could they save the souls of those who came to them. But the High Priest of our profession holds his office by the power of endless life in himself; not only to keep himself alive, but to give spiritual and eternal life to all who rely upon his sacrifice and intercession. The better covenant, of which Jesus was the Surety, is not here contrasted with the covenant of works, by which every transgressor is shut up under the curse. It is distinguished from the Sinai covenant with Israel, and the legal dispensation under which the church so long remained. The better covenant brought the church and every believer into clearer light, more perfect liberty, and more abundant privileges. In the order of Aaron there was a multitude of priests, of high priests one after another; but in the priesthood of Christ there is only one and the same. This is the believer's safety and happiness, that this everlasting High Priest is able to save to the uttermost, in all times, in all cases. Surely then it becomes us to desire a spirituality and holiness, as much beyond those of the Old Testament believers, as our advantages exceed theirs.
16. carnal … endless—mutually contrasted. As "form" and "power" are opposed, 2Ti 3:5; so here "the law" and "power," compare Ro 8:3, "The law was weak through the flesh"; and Heb 7:18, "weakness." "The law" is here not the law in general, but the statute as to the priesthood. "Carnal," as being only outward and temporary, is contrasted with "endless," or, as Greek, "indissoluble." Commandments is contrasted with "life." The law can give a commandment, but it cannot give life (Heb 7:19). But our High Priest's inherent "power," now in heaven, has in Him "life for ever"; Heb 9:14, "through the eternal Spirit"; Heb 7:25, "able … ever liveth" (Joh 5:26). It is in the power of His resurrection life, not of His earthly life, that Christ officiates as a Priest.