Philip Ryken is the eighth president of Wheaton College-the school that prepared Jim and Elisabeth Elliot, Ruth and Billy Graham, Doug Birdsall, Ruth Padilla DeBorst, and many other kingdom servants for global evangelism. President Ryken has traveled to more than forty countries on seven continents to teach and preach the gospel. He has also published more than fifty books, mostly on topics he is still learning to put into practice . . . such as servant leadership.

Hwa Yung is a bishop emeritus of the Methodist Church in Malaysia. He has served as a pastor and bishop of the Methodist Church, and as principal of Malaysia Theological Seminary. His wider ministry has included serving on the Council of Trustees of the Oxford Centre for Mission Studies, on the International Board of the Lausanne Movement, and as the president of the International Fellowship of Evangelical Students. His writings are primarily in the field of contextual Asian theology and missiology.