In the Reformed tradition, the Lord's Supper is a sacrament that draws on a rich and deep tradition in its theology and practice. In this new volume in the Columbia Series in Reformed Theology, John Riggs provides a comprehensive overview of the most important Reformed theologians and confessions on the sacrament of the Lord's Supper. Riggs identifies the theology of true mystical union with Christ in the Supper as both a theological legacy the Reformed tradition inherited and a theological achievement that it refined. Ideal for studies in Reformed and liturgical theology, this is an important resource for investigating the eucharistic theology of the Reformed tradition.