Acts 22:23

Cast off their clothes; they that stoned the blasphemer cast off their upper garments, that they might be the readier to do that execution, and carry the heavier stones; as Acts 7:58. They might also cast or rend them off, in sign of grief and detestation of Paul's (supposed) blasphemy. Threw dust into the air; out of raging madness, having no stones at present in that place to throw at him; or stamping on the ground first with their feet, and taking thence the loosened earth, threw it up, to show that Paul had sinned against heaven, and provoked the God who dwells there; and that he was not worthy to tread on the earth, which, as well as they could, they took from him.