The key of knowledge
the Holy Bible

--Luke--

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. (11:52)

--Epistle to the Romans--

An instructor of the foolish, a teacher of babes, which hast the form of knowledge and of the truth in the law. (2:20)

End of Quotes