THE FIRST EPISTLE OF PAUL THE APOSTLE TO THE CORINTHIANS - Chapter 16 - Verse 21

Verse 21. The salutation of me Paul with mine own hand. It is evident that Paul was accustomed to employ an amanuensis in penning his epistles, See Barnes "Ro 16:22"

though he signed his own name, and expressed his Christian salutation in every epistle, 2 Th 3:17; Col 4:18. This gave a sanction to what was written; was a proof that it was his own, and was a valuable token of affectionate regard. It was a proof that there was no fraud or imposition. Why he employed an amanuensis is not known.