The parable describes 10 virgins who take their lamps to go meet the bridegroom. Five were foolish and didn't bring extra oil for their lamps. When the bridegroom was delayed, they all fell asleep. At midnight, they were roused by the announcement that the bridegroom had arrived. The foolish virgins realized their lamps were going out and asked the wise ones for oil, but were told to go buy their own. By the time they returned, the door was shut and they were left outside.