Bishop is mistaken here. Septuagint became the Catholic and Orthodox version of Old Testament while Protestants follow the original Hebrew canon. The reason why Septuagint contained seven more books, it is as Bishop mentioned: the Emperor wanted every books contained, so they included the Deuterocanonical books also: 1st and 2nd books of the Maccabes, book of Judith, Tobiah, Wisdoms, Sirach, Baruch. The Apocrifas were not included, as they were written later than the Septuagint. Such as the book of Enoch, Jubilees etc. Another mistake he said is that he called Ptolemy a Roman emperor. He was a descendant of Alexander the Great, who ruled in Egypt. The last emperor from his dynasty was Cleopatra, overthrown by Rome in 1st century BC.
