Hebrews 7:11

11IfΕἰindeedμὲνthenοὖνperfectionτελείωσιςbyδιὰtheτῆςLeviticalΛευιτικῆςpriesthoodἱερωσύνηςwereἦν,theὁpeopleλαὸςforγὰρuponἐπ’itαὐτῆςhad received [the] Lawνενομοθέτηται,whatτίςstillἔτιneed [was there]χρείαaccording toκατὰtheτὴνorderτάξινof MelchizedekΜελχισέδεκ[for] anotherἕτερονto ariseἀνίστασθαιpriestἱερέαandκαὶnotοὐaccording toκατὰtheτὴνorderτάξινof AaronἈαρὼνto be namedλέγεσθαι;

Then indeed, if perfection were by the Levitical priesthood (for upon it the people had received the law) what need [was] still [for] another priest to arise, according to the order of Melchizedek and not to be called according to the order of Aaron?