Puritanism was a form of Christianity that came to England around 1563 AD. The Puritans believed that God wanted them to lead quiet, simple, serious lives. They spent a lot of their time praying, reading the Bible, and listening to sermons. They did not, have parties, listen to music, or dance. They did not celebrate holidays, not even Christmas or Easter. The growing numbers of Puritans in the house of Commons caused Elizabeth I a lot of trouble.