…for a more substantive assessment of Whitefield’s preaching, we turn to a fellow believer, and a fellow evangelical, a fellow Anglican, and a fellow Calvinist: J.C. Ryle (1816-1900). In his short book on Whitefield, Ryle gives six characteristics of Whitefield’s preaching:
1. A Pure Gospel.
First and foremost, you must remember Whitefield preached a singularly pure gospel. Few men ever gave their hearers so much wheat and so little chaff. He did not get into his pulpit to talk about his party, his cause, his interest, or his office. He was perpetually telling you about your sins, your heart, and Jesus Christ, in the way that the Bible speaks of them. “Oh, the righteousness of Jesus Christ,” he would frequently say; “I must bo excused if I mention it in almost all my sermons!” This, you may be sure, is the corner stone of all preaching that God honors. It must be preeminently a manifestation of truth.”
– See more at:
http://www.patheos.com/blogs/scriptorium/2009/12/happy-birthday-george-whitefield/