“Then sent Ioseph, and called his father Iacob to him, and all his kinred, threescore and fifteeene soules.”
1611 King James Version (KJV)
7:14 Seventy - five souls - So the seventy interpreters, (whom St. Stephen follows,) one son and a grandson of Manasseh, and three children of Ephraim, being added to the seventy persons mentioned #Gen 46:27|.
Ac 7:14 Then sent Joseph. The rejected Joseph becomes the prince and savior of all Israel. Threescore and fifteen souls. Ge 46:27 says that sixty-six persons besides Jacob, Joseph and his two sons, seventy in all, were in Egypt. But the Septuagint Version, quoted almost invariably by Christ and the apostles, as well as by Stephen here, after giving the sixty-six, adds: "And the sons of Joseph born in Egypt were nine souls". The nine, added to the sixty-six, make the seventy-five that Stephen gives. Why this clause was omitted from the Hebrew text, followed by the Common Version, is unknown. Stephen simply follows the text received by Christ, the apostles, and the Jews generally.