Hebrews 7:17-22 New International Version (NIV)

17. For it is declared: “You are a priest forever, in the order of Melchizedek.”

18. The former regulation 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.

20. And it was not without an oath! Others became priests without any oath,

21. but he became a priest with an oath when God said to him: “The Lord has sworn and will not change his mind: ‘You are a priest forever.’ ”

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

Hebrews 7