At the Last Supper, after Jesus consecrated the bread and wine for the first time, is it possible that one or more of the disciples believed upon hearing these words that an actual transformation of the elements of the bread and wine had taken place? I think it’s possible that Judas was probably the only one who didn’t, and for four reasons.
First, at the Last Supper, when Jesus broke the bread and said, “This is my body”, he had said it in Aramaic. Semitic languages do not have words to indicate the verb “to be” in these types of statements. In Hebrew and Aramaic, the verb is implied when a subject and predicate are simply juxtaposed. What Jesus literally said as he held the bread was, “this, the body of me”. The disciples would have understood that the one is precisely identified with the other. Also, there were other expressions Jesus could have used to indicate that the bread was only to be regarded as a symbol.
Secondly, when Jesus said the words of consecration, the disciples would have immediately recalled the incident recorded in the Gospel of John chapter 6. Jesus repeats four times to a large crowd of followers that they would have to eat His flesh and drink His blood in order to have eternal life. They had thought He was referring to cannibalism, and Jesus did nothing to prevent their deserting Him because they had understood Him correctly, but faithlessly. So Jesus doubles down, demonstrating that this whole dialogue was specifically aimed at the twelve disciples:
“What if you were to see the Son of Man ascending to where he was before?” (vs. 62).
He puts them in a corner with an obvious dilemma. Let me paraphrase Jesus’ words,
“I just told you that to have eternal life you and anyone must consume my real body and blood. So how will you do that when I’m not here?”