John Piper Quotes about Past
Preaching is the pastor's main work, and preaching is heart work, not just mental work.
John Piper (2016). “A Camaraderie of Confidence: The Fruit of Unfailing Faith in the Lives of Charles Spurgeon, George Müller and Hudson Taylor”, p.21, SPCK
John Piper (2012). “Future Grace, Revised Edition: The Purifying Power of the Promises of God”, p.100, Multnomah