Acts 12:6

12:6 On that very night before Herod was going to bring him out for trial, Peter was sleeping between two soldiers, bound with two chains, while guards in front of the door were keeping watch over the prison.

Acts 16:27

16:27 When the jailer woke up and saw the doors of the prison standing open, he drew his sword and was about to kill himself, because he assumed the prisoners had escaped.