Historically Puritanism began early (c.1560) in the reign of Queen Elizabeth I as a movement for religious reform. The early Puritans felt that the Elizabethan ecclesiastical establishment was too political, too compromising, and too Catholic in its liturgy, vestments, and episcopal hierarchy. Calvinist in theology, they stressed predestination and demanded scriptural warrant for all details of public worship. They believed that the Scriptures did not sanction the setting up of bishops and churches by the state. The aim of the early Puritans such as Thomas Cartwright was to purify the church (hence their name), not to separate from it. However, by 1567 a small group of lay rigorists was discovered meeting secretly in London to worship after the pattern of the service of the church in Geneva.
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