John contributes commentary and other pastoral reflections to WORLD. He is founder and teacher of desiringGod.org and chancellor of Bethlehem College and Seminary. John has authored more than 50 books, including Don't Waste Your Life. John resides in Minneapolis, Minn.
Follow John Piper on Twitter @JohnPiper
Wrestling without a handicap is no virtue
And do politics as though you were not doing politics
Men were not wired to follow women into danger
On the anniversary of Ayn Rand's classic, some lessons on God and values
Survey shows that having a biblical worldview changes the way evangelicals live