Hebrews 7
11 Ref Now if it was possible for things to be made complete through the priests of the house of Levi (for the law was given to the people in connection with them), what need was there for another priest who was of the order of Melchizedek and not of the order of Aaron?
12 Ref Because if the priests are changed, it is necessary to make a change in the law.
13 Ref For he of whom these things are said comes of another tribe, of which no man has ever made offerings at the altar.
14 Ref Because it is clear that our Lord comes out of Judah, and Moses said nothing about priests from that tribe.
15 Ref And this is even more clear if a second priest has come up who is like Melchizedek,