Parallel
Hebrews 7:20
Nestle 1904 Greek New Testament · Berean Standard Bible
Καὶ καθ’ ὅσον οὐ χωρὶς ὁρκωμοσίας οἱ μὲν γὰρ χωρὶς ὁρκωμοσίας εἰσὶν ἱερεῖς γεγονότες
And none of this happened without an oath. For others became priests without an oath,