42 See the note on proconsul in v. .
43 He believed. The faith of the proconsul in the face of Jewish opposition is a theme of the rest of Acts. Paul has indeed become “a light to the Gentiles” (Acts 13:47).
44 The translation “greatly astounded” for ἐκπλησσόμενος (ekplēssomenos) is given by L&N 25.219.
45 Grk “of,” but this could give the impression the Lord himself had done the teaching (a subjective genitive) when actually the Lord was the object of the teaching (an objective genitive).

In other versions

Then the proconsul believed, when he saw what had occurred, for he was astonished at the teaching of the Lord.

When the proconsul saw what had happened, he believed, for he was amazed at the teaching about the Lord.

Then, when he saw what happened, the proconsul believed, because he was astonished at the teaching of the Lord.

When the governor saw what had happened, he became a believer, for he was astonished at the teaching about the Lord.

Then when the proconsul saw what had happened, he believed, because he was astounded at the teaching about the Lord.

Then the deputy, when he saw what was done, believed, being astonished at the doctrine of the Lord.

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