Sam Chan (PhD, Trinity Evangelical Divinity School; MBBS, University of Sydney) is a public evangelist with City Bible Forum in Sydney, Australia, where he regularly shares the gospel with high school students, city workers, doctors, and lawyers. He is the author of the award-winning book Evangelism in a Skeptical World and regularly speaks at conferences around the world on the practice of evangelism in a post-Christian culture. Sam blogs at espressotheology.com.Malcolm Gill (PhD, Dallas Theological Seminary) currently serves on the ministry team at St Andrew’s Cathedral in Sydney, Australia. Prior to pastoral ministry Malcolm taught preaching at Dallas Theological Seminary as well as Sydney Missionary and Bible College, where he was also the director of Postgraduate studies. He has traveled extensively and has preached throughout North, South, and Central America, Europe, Asia, the Middle East, and the Pacific. Malcolm is married to Tamara and the father of Annabel, Adam, and Zara.