Theodoret of Cyrus: Christ's Unique Priestly Role

He then presents once again from another angle this priesthood as superior. While the priests were numerous owing to their being prevented by death from continuing, he has an uninterrupted priesthood by remaining forever (vv.23-24): the priests according to the Law have a mortal nature; hence they cannot act as priests in perpetuity, but have their children succeed them in priesthood. He, on the other hand, being immortal, does not pass on to another the prerogative of priesthood.

- Theodoret of Cyrus (around A.D. 393 to around A.D. 457), Commentary on Hebrews, Chapter 7, in Theodoret of Cyrus, Commentary on the Letters of St. Paul, Volume 2, pp. 167-68 (2001), Robert C. Hill translator.