the son of Jesse, the son of Obed, the son of Boaz, the son of Salmon, the son of Nahshon,

 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. 