What was the sensation Henry Maxwell's proposition made in his congregation?

From the text:

Henry Maxwell paused again and looked out over his people. It is not easy to describe the sensation that such a simple proposition apparently made. Men glanced at one another in astonishment. It was not like Henry Maxwell to define Christian discipleship in this way. There was evident confusion of thought over his proposition. It was understood well enough, but there was, apparently, a great difference of opinion as to the application of Jesus' teaching and example.