Yes, but who's life was changed that day?

Saturday, 21.--I preached in Illogan and at Redruth; Sunday, 22, in St. Agnes church town, at eight; about one at Redruth; and at five, in the amphitheater at Gwennap. The people both filled it and covered the ground round about to a considerable distance. Supposing the space to be fourscore yards square and to contain five persons in a square yard, there must be above two and thirty thousand people, the largest assembly I ever preached to. Yet I found, upon inquiry, all could hear even to the skirts of the congregation! Perhaps the first time that a man of seventy had been heard by thirty thousand persons at once! 

The Journal of John Wesley