As in Gal 6.11, Paul guarantees that this letter is genuine by taking over the pen from his secretary for the last few lines. The phrase “Greetings from Paul” in italics in Good News Bible suggests that only these words are in Paul’s own hand. But it is perhaps more likely that the whole of verses 21-24 were personally written by Paul. Revised Standard Version‘s paragraphing suggests this.

Quoted with permission from Ellingworth, Paul and Hatton, Howard A. A Handbook on Paul’s First Letter to the Corinthians, 2nd edition. (UBS Handbook Series). New York: UBS, 1985/1994. For this and other handbooks for translators see here .