These books were originally found on Pastor John Piper's website, Desiring God.
They are as follows:
1. Beyond the Bounds: Open Theism and the Undermining of Biblical Christianity edited by John Piper, Justin Taylor, and Paul Kjoss Helseth [PDF]
2. Desiring God by John Piper
3. Fifty Reasons Why Jesus Came to Die by John Piper [PDF]; originally called The Passion of the Christ
4. Suffering and the Sovereignty of God by John Piper [PDF]
5. The Future of Justification: A Response to N.T. Wright by John Piper [PDF]
6. The Supremacy of Christ in a Postmodern World General Editors- John Piper and Justin Taylor [PDF]
You can find more free e-books and ministry resources at Piper's homepage located here.
Finally, as mentioned above, these books will be added to our Free Apologetics Online Library located here.
Courage and Godspeed,