Genesis 21:6 (NIV) Sarah said, "God has brought me laughter, and everyone who hears about this will laugh with me."
Proverbs 17:22 (KJV) A merry heart doeth good like a medicine. . .
1 Chronicles 16:27 (KJV) Glory and honour are in his presence; strength and gladness are in his place.
Job 8:21 (NIV) He will yet fill your mouth with laughter and your lips with shouts of joy.
Laughter is a sacred sound to our God. Tim Hansel (Draper's Book of Quotations for the Christian World)