“Too many so-called expositors simply make the one central idea the substance of their message. The narrative may be read or retold, but the sermon is essentially their central expository idea—it is explained, illustrated, and applied without further recourse to the text. This approach is not valid exegetical exposition. In exegetical exposition, the substance of the exposition must be clearly derived from the text so that the central idea unfolds in the analysis of the passage and so that all parts of the passage may be interpreted to show their contribution to the theological idea.”
Allen P. Ross, Creation and Blessing (Grand Rapids: Baker Book House, 1988), p. 47.