In addition to the New International Version (2011, Biblica Inc) of the Bible, the following resources were used to help write this sermon: James Montgomery Boice, Philippians: An Expositional Commentary,  pp. 250-61; Fred B. Craddock, Philippians in the Interpretation Commentary, pp.   75-79; David Daniels, “Unbroken”: All I Ever Need, Pantego Bible Church, Fort Worth, TX, 3-23-14; William Hendriksen, Philippians, Colossians and Philemon in the New Testament Commentary, pp. 203-10.