᾽Ιωάννῃ τῷ Θεολόγω.  The title is given to Moses by Philo Judæus (Vita Mos. III. § 11), to Prophets by Eusebius (Demostr. Evang. ii. 9), to Apostles by Athanasius (de Incarn. § 10:  τῶν αὐτοῦ τοῦ Σωτῆρος θεολόγων ἀνδρῶν), and especially to St. John, because the chief purpose of his Gospel was to set forth the Deity of Christ.  See note on Revel. i. 1, in Speaker’s Commentary, and Suicer, Thesaurus, Θεολόγος.