In the tabernacle of the congregation outside the veil, which is before the testimony, Aaron and his sons shall order it from evening to morning before the LORD: it shall be a statute for ever unto their generations for the children of Israel.
And your brethren also of the tribe of Levi, the tribe of your father, bring with you, that they may be joined to you, and minister to you: but you and your sons with you shall minister before the tabernacle of witness.
And you shall say to them, This is the offering made by fire which you shall offer unto the LORD; two lambs of the first year without spot day by day, for a continual burnt offering.
Who are Israelites; to whom belong the adoption, and the glory, and the covenants, and the giving of the law, and the service of God, and the promises;
If therefore perfection were by the Levitical priesthood, (for under it the people received the law,) what further need was there that another priest should arise after the order of Melchisedek, and not be called after the order of Aaron?