Peter IMO was the most “human” of the disciples. At his best he showed great courage. At his worst he had a short fuse and the doubts that we all sometimes have.
While amped up on adrenaline and loyalty towards Jesus he tried splitting the Roman soldiers scull with a broadsword but was a fisherman by trade and so was off center and only managed to lop off an ear. Later that night alone and with the adrenaline gone he denied knowing Jesus.
Peter was wrong in the sense that he was interfering in a plan that was already in place and that he didn’t fully understand it even if he should have. On the other hand I believe that Bible teaches for men to be loyal and fight when called for. Men should be slow to anger and seeking vengeance but there absolutely is a time and a place for it. To sum it up. Peter was wrong for not understanding the events that were about to unfold but he wasn’t really wrong otherwise and Jesus wasn’t all that hard on him for his actions (attempting to kill a Roman soldier).
