World Wide Study Bible
a Bible passage
Another Priest, Like Melchizedek
11 Now if perfection had been attainable through the levitical priesthood—for the people received the law under this priesthood—what further need would there have been to speak of another priest arising according to the order of Melchizedek, rather than one according to the order of Aaron?
11. perfection—absolute: "the bringing of man to his highest state, namely, that of salvation and sanctification."
under it—The reading in the oldest manuscripts is, "Upon it (that is, on the ground of it as the basis, the priest having to administer the law, Mal 2:7: it being presupposed) the people (Heb 9:19, 'all the people') have received the law (the Greek is perfect, not aorist tense; implying the people were still observing the law)."
what further need—(Heb 8:7). For God does nothing needless.
another—rather as Greek, "that a different priest (one of a different order) should arise (anew, Heb 7:15).
not be called—Greek, "not be said (to be) after the order of Aaron," that is, that, when spoken of in the Ps 110:4, "He is not said to be (as we should expect, if the Aaronic priesthood was perfect) after the order of Aaron."