'Twas the Night Before Christmas, when all through the house, not a creature was stirring, not even a mouse...' The traditional and much-loved Christmas poem by Clement Clarke Moore, illustrated by John Joven. 'Twas the Night Before Christmas, when all through the house, not a creature was stirring, not even a mouse...' The traditional and much-loved Christmas poem by Clement Clarke Moore, illustrated by John Joven.