WOE UNTO YOU LAWYERS YOU TOOK AWAY THE KEY OF KNOWLEDGE

"Woe unto you, lawyers! for ye have taken away the key of knowledge: ye entered not in yourselves, and them that were entering in ye hindered. And as he said these things unto them, the scribes and the Pharisees began to urge him vehemently, and to provoke him to speak of many things (Luke 11:52-53):"

Yahuah sent his son Yahusha the Messiah into the world to remove this priesthood and establish a new priesthood after the order of Melchizedek, where everyone that believes would receive direct access to Father...Yahuah without the need of a priest.

Yahusha, Ha Mashiach made the "key of knowledge" available to the masses.

WHAT IS THE KEY OF KNOWLEDGE?

This Melchizedek was king of the city of Salem and also a priest of God Most High. When Abraham was returning home after winning a great battle against the kings, Melchizedek met him and blessed him. 
HEB 7:1

English Standard Version
and to him Abraham apportioned a tenth part of everything. He is first, by translation of his name, king of righteousness, and then he is also king of Salem, that is, king of peace.

King James Bible
To whom also Abraham gave a tenth part of all; first being by interpretation King of righteousness, and after that also King of Salem, which is, King of peace;
HEB 7:2

who desires all men to be saved and to come to the knowledge of the truth. For there is one God, and one mediator also between God and men, the man Christ Jesus, who gave Himself as a ransom for all, the testimony given at the proper time.… 1 Tim 2:2-6