Miracles were
signs that Jesus was the messiah, as miraculous as if your eyes were suddenly opened and saw how ridiculous and reprehensible what you say and do at mass is in actuality.
This just goes to show that from the beginning they never understood a single word Jesus said.
And thats why after the disciples were arguing about who was going to be the greatest in some imaginary worldly kingdom right after Jesus told them that he was about to be arrested and killed, Jesus finally ended up saying , here, "eat this".....and.....
Take this cup of wine and drink it,
all of you, this is a cup of 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"
a curse under the appearance of a cup of wine
to smite the nations. Still works like a charm!