Albert Barnes Commentary Acts 20:4

"And there accompanied him as far as Asia, Sopater of Beroea, [the son] of Pyrrhus; and of the Thessalonians, Aristarchus and Secundus; and Gaius of Derbe, and Timothy; and of Asia, Tychicus and Trophimus." — Acts 20:4 (ASV)

And there accompanied him. It was usual for some of the disciples to attend the apostles in their journeys.

Into Asia. It is not meant that they attended him from Greece through Macedonia; but that they went with him to Asia, having gone before him, and joined him at Troas.

Sopater of Berea. Perhaps the same person who, in Romans 16:21, is called Sosipater, and who is there said to have been a kinsman of Paul.

Aristarchus (Acts 19:29).

Gaius of Derbe. See the note on Acts 19:29.

Tychicus. This man was high in the confidence and affection of Paul. In Ephesians 6:21-22, he styles him a beloved brother, and faithful minister in the Lord.

And Trophimus. Trophimus was from Ephesus (Acts 20:29). When Paul wrote his Second Epistle to Timothy, he was at Miletus, sick (2 Timothy 4:20).