Peter in prison! What a jolt!
Peter had moved from Pentecost to prison, from jeers to spears. He was guarded by sixteen soldiers. One wonders why such a defenseless man needed such a group to watch him. Could it be that Herod feared the supernatural, seeing he knew that Jesus escaped such a group that guarded Him?
Had Peter been hedged in by sixteen hundred soldiers, the problem would not have been increased nor the escape less sure. Peter was bound not only by two chains, but also by the thick walls of the prison, by the three wards of the prison, and finally by an iron gate.