Hebrews 7:20

20 This new system was established with a solemn oath. Aaron’s descendants became priests without such an oath,

Hebrews 7:20 Meaning and Commentary

Hebrews 7:20

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.

Hebrews 7:20 In-Context

18 Yes, the old requirement about the priesthood was set aside because it was weak and useless.

19 For the law never made anything perfect. But now we have confidence in a better hope, through which we draw near to God.

20 This new system was established with a solemn oath. Aaron’s descendants became priests without such an oath,

21 but there was an oath regarding Jesus. For God said to him, “The LORD has taken an oath and will not break his vow: ‘You are a priest forever.’”

22 Because of this oath, Jesus is the one who guarantees this better covenant with God.