John Gill Commentary Acts 22:2

"And when they heard that he spake unto them in the Hebrew language, they were the more quiet: and he saith," — Acts 22:2 (ASV)

And when they heard that he spoke in the Hebrew tongue to
them (See Gill on Acts 21:40).

they kept the more silence ;
it being their mother tongue, and which they best understood; and which the captain and the Roman soldiers might not so well under stand; and chiefly because the Hellenistic language was not so agreeable to them, nor the Hellenistic Jews, who spoke the Greek language, and used the Greek version of the Bible; and such an one they took Paul to be, besides his being a Christian; wherefore when they heard him speak in the Hebrew tongue, it conciliated their minds more to him, at least engaged their attention the more to what he was about to say:

and he says ;
the Syriac and Ethiopic versions add, "to them", as follows.