John Gill Commentary Hebrews 7:20

"And inasmuch as [it is] not without the taking of an oath" — Hebrews 7:20 (ASV)

And inasmuch as not without an oath Our version supplies as follows,

he was made priest ; which well agrees with what is said in the next verse; the Syriac version renders it, "and which he confirmed to us by an oath"; that is, the better hope, Christ and his priesthood, said to be brought in, and by which men draw nigh to God; this is established by the oath of God himself referring to (Psalms 110:4) afterwards cited in proof of it.