In addition to the New International Version of the Bible (2011, Biblica), the following resources were used to help write this sermon: Robert A. Guelich, The Sermon on the Mount, pp. 97-111; William     Hendriksen, The Gospel of Matthew in the New Testament Commentary, pp. 259-82; R. Kent Hughes, The Sermon on the Mount in the Preaching the Word  Commentary, pp. 15-75; John Ortberg, How to Be Really Well Off, Menlo Park (CA) Presbyterian Church, 5-25-08.