Hebrews 7:20-21

20And since
The Greek text contains an elaborate comparison between v. 20a and v. 22, with a parenthesis (vv. 20b–21) in between; the comparison is literally, “by as much as…by so much” or “to the degree that…to that same degree.”
this was not done without a sworn affirmation – for the others have become priests without a sworn affirmation,
21but Jesus
Grk “he”; the referent (Jesus) has been specified in the translation for clarity.
did so
The words “did so” are not in the Greek text, but are implied.
with a sworn affirmation by the one who said to him, “The Lord has sworn and will not change his mind, You are a priest forever ’”
A quotation from Ps 110:4 (see Heb 5:6, 6:20, and 7:17).
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