Discussion of the Divine Generation is continued. St. Ambrose illustrates its method by the same example as that employed by the author of the Epistle to the Hebrews. The duty of believing what is revealed is shown by the example of Nebuchadnezzar and St. Peter. By the vision granted to St. Peter was shown the Son’s Eternity and Godhead—the Apostle, then, must be believed in preference to the teachers of philosophy, whose authority was everywhere falling into discredit. The Arians, on the other hand, are shown to be like unto the heathen.