Peter is thrown into jail by King Herod, where he encounters the Angel of the Lord. The Angel of the Lord aids Peter in his escape from prison, allows Peter to return the house of Mary, where many had gathered and were praying earnestly to God about Peter's situation. From this miraculous event, there are five key lessons that can be learned about prayer: 1) there is no promise to answer any and all prayers; 2) it's important to be persistent in prayer; 3) corporate prayer is vital; 4) It's not the quantity of their faith that is important to God; and 5) remembering when God answers prayers.