Presbyterian Churches are a group of Protestant Christian denominations that trace their roots to the teachings of John Calvin, a 16th-century reformer. They emphasize the authority of the Bible, the sovereignty of God, and the importance of faith in Jesus Christ. Governance in these churches is typically led by elected elders, reflecting their name, which comes from the Greek word for elder. Worship in Presbyterian Churches often includes traditional elements such as hymns, prayers, and sermons. Many congregations also practice infant baptism and celebrate the Lord's Supper regularly. The church's structure and beliefs promote a sense of community and shared responsibility among its members.