Christmas is a vision that enables the Christian to see beyond the tragic in his life. It is a reminder that he needs the laughter of God to prevent him from taking the world too seriously. The Christian law of levity says that whatever falls into the earth will rise again. Christian laughter is the echo of Christmas joy in us.
If you really accept the joy of Bethlehem “glad tidings of great joy,” your heart will be filed with the laughter of the Father. “You are sad now, but I shall see you again, and your hearts will be full of joy, and that joy no one shall take from you.” (John 16:22) -- Brennan Manning