In addition to the New International Version (2011, Biblica) of the Bible, the following resources were used to write this sermon: Charles B. Cousar, Galatians in the Interpretation Commentary, pp.  133-41; William Hendriksen, Galatians and Ephesians in the New Testament Commentary, pp. 209-27; John Ortberg, Living Beyond Myself, Menlo Park (CA) Presbyterian Church, 2-17-13; Todd Wilson, Galatians in the Preaching the Word Commentary, pp. 197-203.