And the angel said unto them,
Fear not: for, behold,
I bring you good tidings of great joy, which shall be to all people.
Luke 2:10
"Zwingli got rid of every ecclesiastical festive day in Zurich. Given that Zwingli embraced the regulative principle of worship, that is, 
churches should only do that which is explicitly commanded in Scripture, he opposed any celebration which was not mentioned in the Bible. This conviction, of course, is one of the key differences between Lutheran and Reformed churches.
It was this same belief regarding the regulative principle that led the English Puritans to do away with Christmas celebrations. When the Protestant Oliver Cromwell served as Lord Protector of England, Scotland and Ireland between 1653 and 1658, Christmas was outlawed on a national scale."
WillGraham/EvangelicalFocus