Jesus was teaching that the words used in the Law were figurative and the subjects were hidden and buried by the elite from the world and even their own laity.
When these men have undergone, with blamelessness of conduct, a two year preparation in the fundamentals of the community, they shall be segregated as especially sacred among the formal members of the community. Any knowledge which the expositor of the law may possess but which may have to remain arcane to the ordinary layman, he shall not keep hidden from them; for in their case there need be no fear that it might induce apostasy.
No one is to engage in discussion or disputation with men of ill repute; and in the company of froward men everyone is to abstain from talk about (keep hidden) the meaning of the Law [Torah]. Dead sea scrolls, manual of Discipline
The body of this teaching, the Actual Body of Christ, was encapsulated in the command to "eat my flesh", a direct reference to kosher law revealing that the subject of clean and unclean flesh has nothing whatever to do with food .....
"The kingdom of Heaven is like hidden treasure lying buried in a field. The man who found it, buried it again."