Hebrews 9:25

25.Nor yet that he should offer himself often, etc. How, then, is he a priest, one may say, if he offers no sacrifices? To this I reply that it is not requited of a priest that he should be continually sacrificing; for even under the Law there were days appointed for the chief sacrifices every year; they had also their hours daily morning and evening. But as that only true sacrifice which Christ offered once for all is ever efficacious, and thus perpetual in its effects, it is no wonder that on its virtue, which never fails, Christ’s eternal priesthood should be sustained. And here again he shows how and in what things Christ differs from the Levitical priest. Of the sanctuary he had spoken before; but he notices one difference as to the kind of sacrifice, for Christ offered himself and not an animal; and he adds another; that he repeated not his sacrifice, as under the Law, for the repetition there was frequent and even incessant.