Albert Barnes on Acts 19:22

Timotheus. Timothy. He was a proper person to send there to visit the churches, as he had been there before with Paul, when they were established, Acts 16:3, 17:14.

And Erastus. Erastus was chamberlain of Corinth, (Rom 16:23,) or, more properly, the treasurer of the city, Rom 16:23; and he was, therefore, a very proper person to be sent with Timothy, for the purpose of making the collection for the poor at Jerusalem. Paul had wisdom enough to employ a man accustomed to monied transactions in making a collection. On this collection his heart was intent, and he afterwards went up with it to Jerusalem. 2Cor 8 2Cor 9.

Stayed in Asia. At Ephesus.

For a season. How long is uncertain. He waited for a convenient opportunity to follow them; probably intending to do it as soon as they had fully prepared the way for the collection. See Paley's Horae Paulinae, p. 1. chap. ii.

(f) "Erastus" Rom 16:23 (|) "season" "Time"