Acts 12:6

6. Time wore away in painful suspense until the Passover was gone by. (6) " And when Herod was about to bring him forth, in that night Peter was sleeping between two soldiers, bound with two chains, and the guards before the door were guarding the prison. " He was securely kept, according to the most ingenious method of the Roman army. Besides the prison-doors, and the guards without, his arms were pinioned by two chains, each to the arm of a soldier on the right and left, so that he could not move without disturbing one or both. If Herod was actuated, in adopting these precautions, by a desire to prevent a rescue, he ought to have known that Peter's brethren never fought with carnal weapons, even to save the life of a brother. Or if he feared a miraculous escape of his prisoner, and intended that the guards should kill him upon the first movement of that kind, he ought to have remembered that all the twelve had once walked out of a prison in that city without hindrance either from the iron doors or the armed soldiers. But wicked men are prone to forget the warnings of the past, and continue to repeat, in endless succession, the blunders of their predecessors.