Parallel
Hebrews 7:20
Robinson-Pierpont Byzantine Textform · 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,