2 Timothy 4:20

Erastus remained at Corinth: but Trophimus I left at Miletus sick.

Erastus ... This too was a common name; but despite this, White identified him as probably the Erastus mentioned in Acts 19:22. The Erastus who was chamberlain of Corinth is thought to be a different character.

Trophimus I left at Miletus sick ... No forger would have spared a miracle in this situation; but, as always, there is a remarkable economy of the divine power where miracles were concerned. They were never wrought for the private benefit of any persons, but were always for confirming the word, either of Christ or his blessed apostles.

TROPHIMUS

This Asiatic Christian was a friend and traveling companion of the apostle Paul, being mentioned three times in the New Testament, here, and in Acts 21:29, and in Acts 24:6. Some also think that he might have been the one Paul mentioned in 2 Corinthians 8:16-24, but without giving his name. He was one of the eight friends who accompanied Paul at the close of his third missionary journey. He was the innocent cause of the riot in the Jewish temple that almost cost Paul his life.

The reference before us shows that even at this late date Trophimus was still a traveling companion of the apostle, having been with him only recently, and who no doubt would have been with him in Rome had not the sickness overtaken him which led to his being left behind in Miletus. "This was not far from Trophimus' native city of Ephesus."[29]