John Stephen Piper (born January 11, 1946, Chattanooga, Tennessee) is a Reforme and Baptist theologian, preacher, and author, currently serving as Pastor for Preaching and Vision of Bethlehem Baptist Church in Minneapolis, Minnesota. He is the author of numerous books, including ECPA Christian Book Award winners What Jesus Demands from the World,Pierced by the Word, and God's Passion for His Glory, and bestsellers Don't Waste Your Life and The Passion of Jesus Christ. The evangelical organization Desiring God is named for his book Desiring God: Meditations of a Christian Hedonist (1986).