Reformed worship

Reformed worship is religious devotion to God as conducted by Reformed or Calvinistic Christians, including Presbyterians. Despite considerable local and national variation, public worship in most Reformed and Presbyterian churches is governed by the Regulative principle of worship.

Huldrych Zwingli, who began his reforming work in Zurich in 1518, introduced many radical changes to worship. His Sunday service, instituted in 1519, was apparently derived from a liturgy called Prone, a late Medieval service which was sometimes held before, during, or after mass. It contained the Lord's Prayer, a Hail Mary, a sermon, a remembrance of those who had died the previous week, another Lord's Prayer and Hail Mary, the Apostle's Creed, the Decalogue, confession, and absolution.

Martin Bucer, the reformer of Strasbourg, believed that proper worship must be conducted in obedience to the Bible, and for this reason he sought to eliminate many of the dramatic ceremonies which were part of the liturgy of the church. He limited worship to preaching, almsgiving, the Eucharist, and prayer. John Oecolampadius, in Basel, believed that while the Bible did not give detailed liturgical instruction, all worship must be guided by biblical principles. For him this meant that worship should be simple and unpretentious.

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