For the law appoints as high priests men who are weak; but the oath, which came after the law, appointed the Son, who has been made perfect forever.
28. For the law, etc. From the defects of men he draws his conclusion as to the weakness of the priesthood, as though he had said, “Since the law makes no real priests, the defect must by some other means be remedied; and it is remedied by the word of the oath; for Christ was made a priest, being not of the common order of...
Observe the necessity there was of raising up another priest, after the order of Melchisedec and not after the order of Aaron, by whom that perfection should come which could not come by the Levitical priesthood, which therefore must be changed, and the whole economy with it, Heb 7:11, Heb 7:12, etc. Here, I. It is asserted that perfection could not come by the Levitical priesthood and the law.
Commenting on Hebrews 7:11-28
Verse 28. For the law. The ceremonial law. Which have infirmity. Who are weak, frail, sinful, dying, Such were all who were appointed to the office of priest under the Jewish law. But the word of the oath. By which one was appointed after the order of Melchizedek. . Maketh the Son. The Son of God. That appointment has resulted in his being set apart to this work.