Hebrews 7:11-18

11Now if there was perfection through the Levitical priesthood (for under it hath the people received the law), what further need was there that another priest should arise after the order of Melchizedek, and not be reckoned after the order of Aaron? 12For the priesthood being changed, there is made of necessity a change also of the law. 13For he of whom these things are said belongeth to another tribe, from which no man hath given attendance at the altar. 14For it is evident that our Lord hath sprung out of Judah; as to which tribe Moses spake nothing concerning priests. 15And what we say is yet more abundantly evident, if after the likeness of Melchizedek there ariseth another priest, 16who hath been made, not after the law of a carnal commandment, but after the power of an endless life: 17for it is witnessed of him,

18For there is a disannulling of a foregoing commandment because of its weakness and unprofitableness