“Erastus abode at Corinth: but Trophimus haue I left at Miletum sicke.”
1611 King James Version (KJV)
4:20 When I came on, Erastus abode at Corinth - Being chamberlain of the city, #Rom 16:23|. But Trophimus I have left sick - Not having power (as neither had any of the apostles) to work miracles when he pleased, but only when God pleased.
2Ti 4:20 Erastus abode at Corinth. Probably his old home (Ro 16:23). Trophimus. He was an Ephesian (Ac 20:4 21:29). Have I left at Miletum sick. These personal details were better understood by Timothy than by us, but I suppose this statement is made to explain why Trophimus was not in Rome. This verse proves that this letter does not belong to the date of Paul's first imprisonment, since years have passed between Paul's last visit to Miletus and the first Roman imprisonment.