merry christmas to all

Why do the bells of Christmas ring?
Why do the little children sing?
Once a lovely shining star
Seen by shepherds from afar
Gently moved until its light
Made a manger's cradle bright.
There a little baby lay
Pillowed soft upon the hay
And its mother sang and smiled
This is Christ, the holy child.
Therefore bells of Christmas ring
Therefore little children sing.
                                                                         -E. Field