On September 11, John Piper spoke at Sing! — the annual Getty Music worship conference for pastors, musicians, and church leaders. In this special recording of Ask Pastor John for our ministry partners, Tony Reinke caught up with John at the Nashville airport to hear about his message on the role of the emotions in the Psalms, and also to get an update from the tail end of his big summer writing project. For the past three months, John has been in the mountains of east Tennessee, working on a big book about the providence of God — a book he calls “one of the most important statements I’ve ever made.” Listen above to this 12-minute update.