Rob has been Senior Pastor of Fourth Presbyterian Church since 1984. Born in South Wales, Rob surrendered himself to God on a Saturday evening at the age of fourteen. Then, at the encouragement of his pastor, he began to preach in small churches in Wales. He studied the Bible, and received a thirst from God for Scripture. Rob holds a BA from Kings College, London; and dual doctorates in history and dogmatics from the University of St. Andrews in Scotland. Prior to coming to Fourth, he was Executive Pastor of Program at First Presbyterian Church in Hollywood, CA. Other positions as Assistant Minister at The City Temple, London; Chaplin to the City of London University; and Chaplain to St. Bartholomew's Hospital. He has taught at Washington DC's Reformed Theological Seminary, and in seminaries in Ukraine, Malta, Japan and Sudan.

He and his wife, Caren, have five children.