It is obvious that Eunomius and Aëtius held the same opinions. In several passages of his writings, Eunomius boasts and frequently testifies that Aëtius was his instructor. Gregory, bishop of Nazianzen, speaks in the following terms of Apolinarius in a letter addressed to Nectarius, the leader of the church in Constantinople: "Eunomius, who is a constant source of trouble among us, is not content with being a burden to us himself, but would consider himself to blame if he did not strive to drag every one with him to the destruction whither he is hastening. Such conduct, however, may be tolerated in some degree. The most grievous calamity against which the Church has now to struggle arises from the audacity of the Apolinarians. I know not how your Holiness could have agreed that they should be as free to hold meetings as we ourselves. You have been fully instructed by the grace of God, in the Divine mysteries, and not only understand the defense of the Word of God, but also whatever innovations have been made by heretics against the sound faith; yet it may not be amiss for your revered Excellency to hear from our narrowness, that a book written by Apolinarius has fallen into my hands, in which the proposition surpasses all forms of heretical pravity. He affirms that the flesh assumed for the transformation of our nature, under the dispensation of the only begotten Son of God was not acquired for this end; but that this carnal nature existed in the Son from the beginning. He substantiates this evil hypothesis by a misapplication of the following words of Scripture: No man hath ascended up into heaven.'
Christianity · Church History · Ecclesiastical History
Book VI, Ch. 27 — Account Given, by Gregory the Theologian, of Apolinarius and Eunomius, in a Letter to Nectarius. Their Heresy was distinguished by the Philosophy of the Monks who were then Living, for the Heresy of these two held Nearly the Entire East.
Ecclesiastical History · Salminius Hermias Sozomen