Compare iv. 7:  “God of God begotten;” xiii. 3 and 13:  “God the Son of God.”  Here however, the mss. vary, and the reading of Cod. Coisl. Υἱῷ Θεοῦ μονογενεῖ is approved by the Benedictine Editor, though not adopted.  The confusion of Υἱῷ and Θεῷ is like that in John i. 18.