Hebrews 7:12

12Being changedμετατιθεμένηςforγὰρof theτῆςpriesthoodἱερωσύνηςfromἐξnecessityἀνάγκηςalsoκαὶof lawνόμουa changeμετάθεσιςtakes placeγίνεται.

For the priesthood being changed, out of necessity a change of law also takes place.