Hebrews 7:16-19

ASV(i) 16 who hath been made, not after the law of a carnal commandment, but after the power of an endless life: 17 for it is witnessed [of him],
Thou art a priest for ever
After the order of Melchizedek.
18 For there is a disannulling of a foregoing commandment because of its weakness and unprofitableness 19 (for the law made nothing perfect), and a bringing in thereupon of a better hope, through which we draw nigh unto God.