Hebrews 7:17-22

And the psalmist pointed this out when he prophesied, “You are a priest forever in the order of Melchizedek.” Yes, the old requirement about the priesthood was set aside because it was weak and useless. For the law never made anything perfect. But now we have confidence in a better hope, through which we draw near to God. This new system was established with a solemn oath. Aaron’s descendants became priests without such an oath, 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.’” Because of this oath, Jesus is the one who guarantees this better covenant with God.