E.M. Bounds emphasizes that true preaching comes from the heart rather than the intellect, arguing that the heart is the source of genuine faith and love, which are essential for effective ministry. He critiques the modern pulpit for prioritizing intellectualism over heartfelt devotion, asserting that great preachers are those who possess great hearts filled with love for God and others. Bounds highlights that the heart must be the foundation of preaching, as it is through heartfelt ministry that true transformation occurs in both the preacher and the congregation. He calls for a return to prayer and reliance on God to cultivate the heart, rather than merely accumulating knowledge. Ultimately, Bounds insists that a heart-centered ministry is vital for truly serving God and impacting the world.