[youtube]http://www.youtube.com/watch?v=QhN2VgdJp_c[/youtube] What might draw a crowd of 20,000 people today to listen to an open-air message of the gospel? For the eighteenth-century preacher, George Whitefield, this was not an uncommon occurrence, as he preached over 18,000 sermons to millions of hearers. By his own testimony, it was not his eloquence or organizational abilities, but the […]