Luke
Acts 14:9BSB·traditional attribution

This man was listening to the words of Paul, who looked intently at him and saw that he had faith to be healed.

John Calvin Reformed @genevareformer

9. He heard Paul speak. Hearing is set down first, that we may know that the faith which Luke will commend by and by was conceived of Paul’s doctrine. Therefore, when he heard Paul, he hoped to be healed. But the question is, whether this was promised to him specially; for God doth not command us to hope for everything by and by, “Protinus,” forthwith.

Matthew Henry Presbyterian @wholebiblehenry

In these verses we have, I. A miraculous cure wrought by Paul at Lystra upon a cripple that had been lame from his birth, such a one as was miraculously cured by Peter and John, Act 3:2. That introduced the gospel among the Jews, this among the Gentiles; both that and this were designed to represent the impotency of all the children of men in...

Commenting on Acts 14:8-18

John Gill Reformed Baptist @doctorgill

The same heard Paul speak,.... That is, preach the Gospel; he was one of his hearers, and faith came to hint by hearing; the Arabic version adds, "he cried unto him"; that is, to Paul, whom he heard: who steadfastly beholding him; not the lame man beholding Paul, but Paul beholding the lame man, as the Syriac and Ethiopic versions both express it, as also...