Acts 8:30 - Clarke's commentary and critical notes on the Bible

And Philip ran thither to him, and heard him read the prophet Esaias, and said, Understandest thou what thou readest? Heard him read the Prophet Esaias - The eunuch, it seems, was reading aloud, and apparently in Greek, for that was the common language in Egypt; and, indeed, almost in every place it was understood. And it appears that it was the Greek version of the Septuagint that he was reading, as the quotation below is from that version.