HebEb HebrewsEbrei, chaptercapitolo Epistle to the HebrewsLettera agli Ebrei, chaptercapitolo 7

And inasmuch as not without an oath [he was made priest]:

(For those priests were made without an oath; but this with an oath by him that said unto him, The Lord - Kurios swore and will not repent, youi [are] a priest forever after the order of Malki-Tzedek [king of righteousness])Psa 110:4