Arthur T. Pierson best exemplifies the integrity of the Philadelphian Church Era... His preaching (over 13,000 sermons), extensive writings (over fifty books), and Bible lectures made him widely known in America. He was a consulting editor for his friend, C. I. Scofield (1843-1921), with the original Scofield Reference Bible (1909), and was the author of the classic biography, 'George Muller of Bristol'... A. T. Pierson's association with D. L. Moody and his Northfield Conferences were the breeding ground for Pierson's determination to see the world evangelized in his generation... Arthur Pierson was himself a speaker at the Keswick Convention. This deepening of the Christian life in Pierson saw him author one of his most spiritually significant books, 'In Christ Jesus' (1898), where Pierson's personal journey had led him to the conclusion that 'this brief phrase ['in Christ Jesus'] -- a preposition followed by a proper name -- is the key to the whole New Testament.'"