If it's metaphor, why did it scandalize everyone there, and why didn't Jesus explain that it was metaphor?
BTW, it's a "metaphor" that's never used anywhere else in Scripture.
St. Augustine put it this way
He also said that you sin if you don't adore the consecrated Host.
Jesus used the exact same metaphor in John 6 and at the Passover meal the night before His crucifixion. That’s at least two places, Want to try again?
Exactly where did Augustine say that?