There’s a great story in Act 16. The Apostles Paul and Silas end up prisoners in Philippi for preaching the Gospel. (There’s way more to why they were imprisoned, but you can read that part.) So, even though they were beaten and imprisoned, they prayed and sang hymns, which led to a miraculous earthquake that shakes the prison. When the prison shakes, the doors are opened freeing all the prisoners. The jailer, who knows the seriousness of being the guard on duty when there are escapees, witnesses this and he is terrified, and pulls his sword to take his own life. But Paul and Silas speak out quickly that they are all there—no one has escaped. It’s so astonishing to the jailer, that it leads to the jailer asking, “Sirs, what must I do to be saved?”