Bring forth therefore fruits worthy of repentance, and don't begin to say among yourselves, 'We have Abraham for our father;' for I tell you that God is able to raise up children to Abraham from these stones!

 John was one of the world's supremely effective preachers. Once Chalmers was congratulated on a sermon. "Yes," he said, "but what did it do?" It is clear that John preached for action and produced it. He did not deal in theological subtleties but in life. 