G2420–ἱερωσύνη–hierōsunē

Now if the crowning blessing was attainable by means of the Levitical priesthood--for as resting on this foundation the people received the Law, to which they are still subject-- what further need was there for a Priest of a different kind to be rais

ἱερωσύνης hi'erōsunēs “priesthood”

For when the priesthood changes, a change of Law also of necessity takes place.

ἱερωσύνης hi'erōsunēs “priesthood”

but He, because He continues for ever, has a priesthood which does not pass to any successor.

ἱερωσύνην· hi'erōsunēn “priesthood;”