“They had previously seen
In the city.
Had brought him
Into the Temple.”
ἦσαν γὰρ προεωρακότες Τρόφιμον τὸν Ἐφέσιον ἐν τῇ πόλει σὺν αὐτῷ, ὃν ἐνόμιζον ὅτι εἰς τὸ ἱερὸν εἰσήγαγεν ὁ Παῦλος.
The author of Acts indicated that they had previously seen (ἦσαν γὰρ προεωρακότες) Trophimus, the Ephesian (Τρόφιμον τὸν Ἐφέσιον) with Paul (σὺν αὐτῷ) in the city (ἐν τῇ πόλει). They supposed (ὃν ἐνόμιζον) that Paul (ὁ Παῦλος.) had brought him (εἰσήγαγεν) into the Temple (ὅτι εἰς τὸ ἱερὸν). This Trophimus, the Ephesian, was a not a Jewish person. However, he was not a Greek either, but an Asian, as mentioned in chapter 20:4. He had accompanied Paul on this journey back to Jerusalem from when he was in Greece and Macedonia. These Jews from Asia had probably seen him in the streets of Jerusalem with Paul, and thus assumed that Paul had taken him into the Temple, since there was no way of knowing who was Jewish or not. Are you able to tell where a person is from by just looking at them?