Hebrews 7:15-19 NIV

[15] And what we have said is even more clear if another priest like Melchizedek appears, [16] one who has become a priest not on the basis of a regulation as to his ancestry but on the basis of the power of an indestructible life. [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.