text: Chapter 3 exhorts the Galatian believers to stand fast in the faith as it is in Jesus. Paul engages in an exegetical argument, drawing upon the figure of Abraham and the priority of his faith to the covenant of circumcision. Paul explains that the law was introduced as a temporary measure, one that is no longer efficacious now that the seed of Abraham, Christ, has come. Chapter 4 then concludes with a summary of the topics discussed and with the benediction, followed by 5:1–6:10 teaching about the right use of their Christian freedom.
  In the conclusion of the epistle, Paul wrote, "See with what large letters I am writing to you with my own hand." (Galatians 6:11, ESV) Regarding this conclusion, Lightfoot, in his Commentary on the epistle, says:
  Some commentators have postulated that Paul's large letters are owed to his poor eyesight, his deformed hands, or to other physical, mental, or psychological afflictions. Other commentators have attributed Paul's large letters to his poor education, his attempt to assert his authority, or his effort to emphasize his final words. Classics scholar Steve Reece has compared similar autographic subscriptions in thousands of Greek, Roman, and Jewish letters of this period and observes that large letters are a normal feature when senders of letters, regardless of their education, take the pen from their amanuensis and add a few words of greeting in their own hands.