Dr. Hughes Oliphant Old was the John H. Leith Professor of Reformed Theology and Worship at Erskine Theological Seminary and Dean of the Institute for Reformed Worship. He was a graduate of Princeton Theological Seminary and studied at the University of Tübingen, the Protestant Theological Faculty of Paris, the Institute Catholique of Paris, and the University of Basel. He completed a D. théol. at the University of Neuchâtel and was appointed a member of the Center of Theological Inquiry in Princeton, New Jersey. His 18 years of pastoral ministry in two churches, combined with meticulous research, has informed his prolific publishing.