Luke
Acts 18:23BSB·traditional attribution

After Paul had spent some time in Antioch, he traveled from place to place throughout the region of Galatia and Phrygia, strengthening all the disciples.

Matthew Henry Presbyterian @wholebiblehenry

We have here Paul in motion, as we have had him at Corinth for some time at rest, but in both busy, very busy, in the service of Christ; if he sat still, if he went about, still it was to do good. Here is, I. Paul's departure from Corinth, Act 18:18. 1.

Commenting on Acts 18:18-23

John Gill Reformed Baptist @doctorgill

This man was instructed in the way of the Lord,.... Which John, whose baptism he only knew, came to prepare: the word here used signifies "catechised"; and suggests, that he was trained up by his parents in this way, who might have been the disciples of John, though afterwards removed from Judea to Alexandria; and that he only had been taught the rudiments of the...

Albert Barnes Presbyterian @notesbybarnes

Verse 23. The country of Galatia and Phrygia. He had been over these regions before, preaching the gospel, Strengthening. Establishing then by exhortation and counsel. . (d) "Galatia" (e) "strengthening"