Hebrews 7:16-24

16one who has become a priest not by a law of succession, but by the power of an indestructible life. 17For it is testified:

18So the former commandment is set aside because it was weak and useless 19(for the law made nothing perfect), and a better hope is introduced, by which we draw near to God.

20And none of this happened without an oath. For others became priests without an oath, 21but Jesus became a priest with an oath by the One who said to Him:

22Because of this oath, Jesus has become the guarantee of a better covenant.

23Now there have been many other priests, since death prevented them from continuing in office. 24But because Jesus lives forever, He has a permanent priesthood.