The reading of sermons is a dull way of preaching. Sermons, when read, are not delivered with authority and in an affecting way…When sermons are delivered without notes, the looks and the gesture of the minister [are] great means to command attention and stir up affection. Men are apt to be drowsy in hearing the Word, and the liveliness of the preacher is a means to stir up the attention of the hearers and beget suitable affection in them. Sermons that are read are not delivered with authority; they savor [of the] sermons of the scribes (Matthew 7:29). Experience shows that sermons read are not so profitable as others.
From: The Preaching of Jonathan Edwards by John Carrick (Edinburgh: The Banner of Truth Trust, 2008), p. 411. Quoting from Edwards’ sermon “The Defects of Preachers Reproved” (1723).