We call it the virgin birth, and it is one of the most incredible ideas that was ever introduced to the world. Many of us may accept the virgin birth of Jesus on the basis of biblical authority, but we do not understand it. I have a beautiful little friend in the seventh grade whose name is Kristin. She is a very bright and sensitive girl, but she does not understand everything she hears in church. (I am sure that many of us can identify with that!) One day when Kristin was in the cafeteria at school, and one of her curious friends asked her…