 Then they were thrown into prison and the jailer was ordered to make sure they didn't escape. So he took no chances and put them into the inner dungeon and clapped their feet in the stocks. Around midnight, Paul and Silas were praying and singing hymns to God and the other prisoners were listening. Verse 26, suddenly there was a great earthquake and the prison was shaken at its foundations and the doors flew open and the chains of every prisoner fell off.