What precisely does the author of Hebrews refer to when he states that [Χριστὸς]... διὰ πνεύματος αἰωνίου ἑαυτὸν προσήνεγκεν ἄμωμον τῷ θεῷ? It is the contention of this paper that the New Testament hapax διὰ πνεύματος ...