2 Bible Verses about Priesthood, In Ot

being designated by God high priest with the rank of Melchizedek.

Further, if the Levitical priesthood had been the means of reaching perfection (for it was on the basis of that priesthood that the Law was enacted for the People), why was it still necessary for another sort of priest to emerge with the rank of Melchizedek, instead of simply with the rank of Aaron (for when the priesthood is changed, a change of law necessarily follows)? He who is thus described belongs to another tribe, no member of which ever devoted himself to the altar;read more.
for it is evident that our Lord sprang from Judah, and Moses never mentioned priesthood in connexion with that tribe. This becomes all the more plain when another priest emerges resembling Melchizedek, one who has become a priest by the power of an indissoluble Life and not by the law of an external command; for the witness to him is, Thou art priest for ever, with the rank of Melchizedek.