Letter 125: A transcript of the faith as dictated by Saint Basil, and subscribed by Eustathius, bishop of Sebasteia. 1. Both men whose minds have been preoccupied by a heterodox creed and now wish to change over to the congregation of the orthodox, and also those who are now for the first time desirous of being instructed in the doctrine of truth, must be t...

Basil of CaesareaUnknown|c. 364 AD|basil caesarea
arianismfamine plagueillness
Barbarian peoples/invasions; Theological controversy; Church council

**A Statement of Faith, as dictated by Basil and signed by Eustathius, Bishop of Sebasteia** [Sebasteia: modern Sivas, in central Turkey]

**1.** Anyone who wants to leave a heretical group and join the orthodox church — or anyone learning the faith for the first time — should be taught the creed written by the blessed fathers at the Council of Nicaea [Nicaea: the council held in 325 AD that produced the foundational Christian creed, defining Christ as fully divine and "of one substance" with the Father].

This same creed is also extremely useful for people we suspect of opposing sound doctrine but who use clever arguments to hide what they really believe. The creed is all that's needed. Either it will cure their hidden errors, or — if they keep hiding them — they'll bear the consequences of their dishonesty. On the day of judgment, the Lord will uncover what is hidden in darkness and reveal the true intentions of every heart (1 Corinthians 4:5).

So we should require not just that they affirm the *words* of the Nicene Creed, but that they accept the *meaning* those words were intended to carry. Because some people twist even this creed to fit their own ideas.

Take Marcellus [Marcellus of Ancyra: a bishop who taught that Christ was merely the Word/Logos of God with no distinct personal existence — effectively denying that the Son is a real, eternal person]. He held impious views about the reality of our Lord Jesus Christ, reducing him to nothing more than the Logos. Yet he had the nerve to claim the creed supported his position by misreading the word *homoousios* [homoousios: Greek for "of the same substance" — the creed's key term affirming that the Son shares the Father's divine nature].

Meanwhile, followers of the Libyan Sabellius [Sabellius: a theologian who taught that Father, Son, and Holy Spirit are not three distinct persons but merely three modes or masks of one God — effectively erasing the Trinity] — who treat *hypostasis* and *substance* as meaning the same thing — also try to find support in the creed. They point to where it says: "If anyone says the Son is of a different substance or hypostasis, the Catholic and Apostolic Church condemns him."

But the creed did *not* say hypostasis and substance are identical. If both words meant the same thing, why use both? What actually happened is this: some people denied the Son was of the same substance as the Father, while others claimed the Son belonged to some other hypostasis entirely. The creed condemned *both* errors. When the fathers stated their own positive belief, they declared the Son to be "of the substance of the Father" — but they did not add "of the hypostasis." The first phrase condemns the wrong view; the second states the saving truth.

We are therefore bound to confess that the Son is of one substance with the Father, as the creed says — while also affirming that the Father exists in his own distinct hypostasis [hypostasis: roughly "person" — the term the Cappadocian fathers used to distinguish the three persons of the Trinity while maintaining they share one divine substance], the Son in his, and the Holy Spirit in his. The fathers themselves made this clear. When they wrote "Light from Light," they showed that the Light who begets and the Light who is begotten are distinct — and yet both are Light. The definition of the substance is one and the same.

Here is the actual creed as written at Nicaea:

**2.** We believe in one God, the Father Almighty, maker of all things visible and invisible;

And in one Lord Jesus Christ, the Son of God, the Only-Begotten, born of the Father before all ages —

That is, from the substance of the Father: God from God, Light from Light, true God from true God, begotten not made, of one substance with the Father, through whom all things were made, both in heaven and on earth.

Who for us and for our salvation came down from heaven and took on flesh [the text breaks off here in the source].

Modern English rendering for readability. See the 19th-century translation or original Latin/Greek for scholarly use.

Related Letters