Acts 28:16

To dwell by himself, with a soldier that guarded him. St. Paul was chained, as it appears by the 20th verse: and it was the custom to fasten one end of the chain by a lock ot the prisoner's wrist, and the other end of the chain to the wrist of the soldier who was to guard him. In most Greek copies we read: the centurion delivered the prisoners to the captain of the guards: as it is in the Protestant translation, and very probable; but these words are not found in divers Greek manuscripts nor were read by the ancient interpreter of the Latin Vulgate. (Witham) --- St. John Chrysostom attributes this liberty St. Paul enjoyed at Rome of going whither he liked, to their admiration of him. (Hom. liv. in Acts.) --- Others to the moderation of Afranius Burrus, who was prefect of the Prætorium in the year 61, and who used his authority, as long as he possessed any over Nero's mind, to repress that emperor's bad inclinations, and direct his councils with wisdom. (Calmet)