John Chrysostom: A Third Branch of General Revelation: Parents

Along with these two [Creation and Conscience], however, the sermon showed you also a third teacher given in addition by the providence of God, no longer voiceless like the former ones; instead, by word, exhortation and advice it controls our free will. What is this? The parents assigned to each of us: God caused us to be loved by our parents for this reason, that we might have mentors in virtue. You see, he does not make fathers only for having children but also for instructing them properly, nor cause mothers to give birth to children but to nourish them properly.

- John Chrysostom (around A.D. 347 to around A.D. 407), Homilies on Hannah, Homily 1, in St. John Chrysostom, Old Testament Homilies, Volume 1, p. 71 (2003), Robert C. Hill translator.