Peter was following Him from a distance as far as the courtyard of the kohen gadol . And after going inside, he was sitting with the guards, to see the outcome.
The Torah scholars and the ruling kohanim tried to grab Him that very hour, because they realized that He spoke this parable against them—but they feared the people.
After threatening them again, they let them go—finding no way they could punish them on account of the people, because they all were glorifying God for what had happened.