There are five wise girls who are ready for the wedding but there are five foolish girls who aren't. The foolish girls haven't got enough oil for their lamps. When the bridegroom arrives in the middle of the night only the girls who were ready get to go to the ceremony. The foolish bridesmaids have left it too late and get locked out. This is a story that Jesus told. It has a hidden meaning. It tells us that we all must be ready to go to heaven. If we do not listen to God or obey his word then we will be like the foolish girls and locked out of heaven.