Hebrews 7:4, 8, 13, 15, 18

Now consider how great this man was, to whom even the patriarch Abraham gave a tenth of the spoils.

Here mortal men receive tithes, but there he receives them, of whom it is witnessed that he lives.

For He of whom these things are spoken belongs to another tribe, from which no man has officiated at the altar.

And it is yet far more evident if, in the likeness of Melchizedek, there arises another priest

For on the one hand there is an annulling of the former commandment because of its weakness and unprofitableness