Two examples of absolution. Pilate washed his hands. Paul and Barnabas shook their feet.
Judges wash their hands. Prophets shake their feet.
When Pilate washed his hands, he acknowledged that there is moral culpability in condemning someone to death even while not being the executioner.
Acts is the story of the apostles literally fulfilling Jesus command to go from town to town, and if necessary, to shake the dust from their feet.