What should be the best theme and Bible passage or reading that will be most suitable for Christmas Day?

The best theme for Christmas Day would be the birth of Jesus Christ and the message of hope, love, and salvation that he brings to the world. A suitable Bible passage for Christmas Day could be Luke 2:1-20, which tells the story of the birth of Jesus in Bethlehem and the announcement of his birth to the shepherds by angels. This passage captures the essence of the Christmas story and the joy and wonder that surrounded the birth of Jesus.