Hebrews 7:11-13

Young's Literal Translation

¹¹ If indeed, then, perfection were through the Levitical priesthood -- for the people under it had received law -- what further need, according to the order of Melchisedek, for another priest to arise, and not to be called according to the order of Aaron?

¹² for the priesthood being changed, of necessity also, of the law a change doth come,

¹³ for he of whom these things are said in another tribe hath had part, of whom no one gave attendance at the altar,