Josephus, Antiquities of the Jews 18.28. It is most improbable, however, that Josephus is correct in identifying Julia as the daughter of Augustus, which is the basis of dating the foundation of Bethsaida-Julias prior to 2 B.C., the year of her disgrace. The referrence is to the wife of Augustus, the mother of the future emperor Tiberius. See Strickert, Bethsaida, pp. 92–93.