John Piper is founder and teacher of Desiring God and chancellor of Bethlehem College and Seminary. For 33 years, he served as pastor of Bethlehem Baptist Church, Minneapolis, Minnesota. He is author of more than 50 books, including Desiring God: Meditations of a Christian Hedonist and most recently Foundations for Lifelong Learning: Education in Serious Joy.

Joel Beeke is chancellor and professor of homiletics and systematic theology at Puritan Reformed Theological Seminary and pastor of the Heritage Reformed Congregation, Grand Rapids, Michigan.

Kevin DeYoung is the senior pastor at Christ Covenant Church (PCA) in Matthews, North Carolina and Associate Professor of Systematic Theology at Reformed Theological Seminary (Charlotte). He is the author of more than twenty books and a popular columnist, blogger, and podcaster. Kevin and his wife, Trisha, have nine children. Browse all of Kevin’s articles, sermons, books, podcasts, and more at KevinDeYoung.org.

Sinclair Ferguson is a Ligonier teaching fellow and Chancellor’s Professor of Systematic Theology, Reformed Theological Seminary.