It was a jew who told his jew friends to eat his flesh and drink his blood, what were jews into in the days of Jesus?
John 6:53Complete Jewish Bible (CJB)
53 Then Yeshua said to them, “Yes, indeed! I tell you that unless you eat the flesh of the Son of Man and drink his blood, you do not have life in yourselves
They were deeply involved in a top secret mission dedicated to destroying the two horned political/religious beast that was the Roman enemy.
Take from my hand this cup of fiery wine and make all the nations to whom I send you drink it. When they have drunk it they will vomit and go mad; such is the sword that I am sending among them. Jeremiah 25:15
I will force your oppressors to eat their own flesh and make them drunk on their own blood as if with new wine. Isaiah 49: 26
Take this cup of wine and drink it. This is my blood, the blood of the covenant.
Just art thou, in these thy judgments, thou Holy One who art and wast; for they shed the blood of thy people and of thy prophets and thou hast given them blood to drink. Rev16:5
Another one that takes verses from here and there, and out of context. Jesus a jew says to eat his flesh and drink his blood,
he is a jew talking to other jews. (supposedly).
So this is a jewish thing.
He is saying he is the sacrifice, not more animal sacrifices. No more buying pigeons and lambs at the temple to be slaughtered for your sins.
Rome was very good to the Jews, but the zealot Jews rebelled and attacked Rome first, plus the jews were fighting amongst themselves, civil wars.