The word in Hebrew is "play," but in the King James translation it is "rejoice," because that is a more sedate word. You may rejoice in church, but not play. You may not have fun in church, but you may rejoice. Do you see the difference? The point of the matter is that there was no reason to make the world, and it was done just to make celestial whoopee. Allelulia. That is why the angels are laughing.

Alan Watts, Myth and Religion