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Liturgy refers to a formal system of veneration and public worship, often structured with designated sacred personnel leading ceremonies for the people. It is a universal aspect of religion, with some historians defining religion itself as cultic worship.12

In Roman Catholicism, the liturgy has roots in Judaism and the New Testament, with the eucharistic assembly (celebration of the Last Supper) being a central act. The liturgy of the Word, a key part of the mass, typically includes readings from the Old and New Testaments, followed by a homily and a profession of faith. The divine office, or liturgy of the hours, is another form of public worship comprising psalms, hymns, and prayers intended to sanctify the community. The practice of liturgy has evolved over centuries, with significant reforms occurring after the Second Vatican Council, including the shift from Latin to vernacular languages in many services.1345

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