A closely targeted earthquake shook Paul's chains loose; along with all the other Philippian prisoners.
What's a good Roman jailer expected to do in cases like this: Asleep at midnight and every cell door suddenly opened, every shackle immediately hanging empty?
Ancient Roman culture--like modern-day Japanese--had a level of honor. Since the man in charge of a prisoner bore the prisoners fate if he escaped, this jailer thought to spare his family the shame of his failure. He was about to take his own life. That is, until Paul turned his life around!
"Were babies baptized 'at that hour of the night'?" And, "Why did Paul insist on formal release?" -- a couple of interesting questions, huh?