New Testament worship provides for two sacraments or ordinances instituted by Jesus as signs of God’s grace and saving love. Those sacraments are baptism and the Lord’s Supper.
“The Sacraments are the Word of God enacted and sealed in the life of the Church, the body of Christ. They are gracious acts of God, by which Christ Jesus offers his life to us in the power of the Holy Spirit. They are also human acts of gratitude, by which we offer our lives to God in love and service. The Sacraments are both physical signs and spiritual gifts, including words and actions, surrounded by prayer, in the context of the Church’s common worship. They employ ordinary things – the basic elements of water, bread, and wine – in proclaiming the extraordinary love of God. The Reformed tradition recognizes the Sacraments of Baptism and the Lord’s Supper (also called Eucharist or Holy Communion) as having been instituted by the Lord Jesus Christ through the witness of the Scriptures and sustained through the history of the universal Church.” The Book of Order, W-3.0401