Communication has depth. A single human speaker can unpack an opening statement further on in his speech and provide illumination that gives new depth to its meaning. Even human communication is not always one-dimensionally flat and shallow. Human writing can suggest depths or allude to implications without spelling them out. Or it can spell out these matters in additional communication, perhaps at a later time or in a sequel. How much more so when it comes to divine communication!
From: “Biblical Hermeneutics” by Vern S. Poythress, in Seeing Christ in All of Scripture: Hermeneutics at Westminster Theological Seminary, edited by Peter A. Lillback (Philadelphia: Westminster Seminary Press, 2016), p. 15.