When Philo was living in Alexandria the Jews were treated badly by the Greeks. According to Philo’s book Against Flaccus, Egypt’s Roman ruler Aulis Avilius Flaccus persecuted the Jews because the Jews refused to worship Caligula as a god. Philo wrote his book Against Flaccus attacking him for doing that. Philo was one of many Jews who went to Rome to convince Caligula not to build a giant statue of himself as the god Jupiter and put it inside the Second Temple of Jerusalem because if Caligula did that the Jews would rebel against him. Philo wrote a book describing his mission to Caligula called Legatio ad Gaium (The Embassy to Gaius) because Gaius was Caligula’s real name.