Hebrews 7:12

For the priesthood being changed, there is made of necessity a change also of the law.

The law which is here said to be changed cannot be amended to read, "the ceremonial law" or "the priestly law." It has to stand for everything of which the Levitical system was the center and support, namely, the whole Hebrew system of religion. To make the law that was changed apply only to the ceremonies, sacrifices, lustral rites, typical services, etc., without making it apply to the MORAL COMMANDMENTS, the breaking of which required those very offerings, sacrifices, and ceremonies is illogical. ALL OF THE LAW was therefore changed to conform utterly to the will of that great Messiah-Priest-King whose priesthood superseded that of Aaron and the Levites. The undeniable fact that certain principles of the Mosaic Law were brought over into the new covenant, refined, extended, and perfected, is no problem, because even such commandments as required the love of God (Decalogue I) or the love of neighbor (Decalogue X) derive their authority for Christians, not from the Decalogue at all, but from Christ who is prior to the Decalogue and above it, and whose priesthood is of an order older even than Abraham (to say nothing of Moses, Aaron, and the Levites), namely, the order of Melchizedek. Thus in the case of commandments I and X in the Decalogue, the change of the law did not result in the amelioration or diminution of their force, but did result in the shift of their authority to a higher level, that of Christ the Son, as being superior to that of a servant, as was Moses, and in their being redefined on a nobler and higher plane.