Fathers And Types Of Sons

Χάρις ὑμῖν καὶ εἰρήνη ἀπὸ θεοῦ πατρὸς ἡμῶν καὶ Κυρίου Ἰησοῦ Χριστοῦ  Καὶ τοῦτο δὲ λεκτέον, πατέρα ἑαυτῶν τὸν θεὸν εἰρηκότες οὐκέτι ἀδελφὸν ἀλλὰ κύριον ἑαυτῶν τὸν σωτῆρά φασιν, δεικνύντες ὅτι κἂν υἱοὶ θεοῦ γένωνται οἱ γενητοί, οὐδὲν ἧττον δοῦλοι μένουσι τοῦ Κυρίου Ἰησοῦ δημιουργοῦ αὐτῶν τυγχάνοντος· μόνος γὰρ αὐτὸς ἀληθείᾳ καὶ οὐ θέσει υἱὸς ὢν θεοῦ δεσπότης ἐστὶ τῶν υἱοποιουμένων. Δίδυμος Αλεξανδρεύς, Εἰς Τὴν Δευτέραν Ἐπιστολήν Παύλου Πρὸς Κορινθίους Source:  Migne PG 39.1682b-c

Grace and peace to you from God our Father and the Lord Jesus Christ. 1  And this also must be said, that they who call God their Father do not name the Saviour their brother but their Lord, so demonstrating themselves to be indeed created sons of God, and yet nevertheless  servants of Lord Jesus, who is their Creator. For He alone is not a son of God by adoption and so He is the Lord of those who are adopted. Didymus the Blind, On The Second Letter of Paul to The Corinthians, Fragment 1. 2 Cor 1.2