I would recommend the story of the Christmas star. It's a story that follows a star that shines brightly over Bethlehem. It's a classic Christmas theme presented in a way that young children can understand. The beautiful illustrations in the Golden Books version make it even more appealing to kids.
The story of the Christmas mouse might be a good choice. A little mouse discovers all the wonderful things about Christmas like the presents under the tree and the stockings filled with goodies. It's a fun and light - hearted story that young children will surely enjoy.