12 For when there is a change in the priesthood, there is necessarily a change in the law as well.
13 For the one of whom these things are spoken belonged to another tribe, from which no one has ever served at the altar.
14 For it is evident that our Lord was descended from Judah, and in connection with that tribe Moses said nothing about priests.
15 This becomes even more evident when another priest arises in the likeness of Melchizedek,
16 who has become a priest, not on the basis of a legal requirement concerning bodily descent, but by the power of an indestructible life. (Hebrews 7:12-16)
Technically, Jesus' High Priestly ministry would have been a violation of the law of Moses! Jesus was from the tribe of Judah. According to the law of Moses, priests were required to be from the tribe of Levi.
Jesus came to fulfill the law of Moses, changed the priesthood, and changed the law! PRAISE GOD!
Jesus stated that His purpose was to fulfill the law...NOT promote and endorse the law of Moses!
If Jesus advocated the law, He could not be our High Priest.
We strongly encourage you to read Hebrews chapters 7 and 8 for God's clarification on the Old Covenant in contrast to the New Covenant.
"In speaking of a new covenant, he makes the first one obsolete. And what is becoming obsolete and growing old is ready to vanish away." (Hebrews 8:13)