2 Those names of the elements which may be told, and are common, he has called Æons, and words, and roots, and seeds, and fulnesses, and fruits. He asserts that each of these, and all that is peculiar to every one of them, is to be understood as contained in the name Ecclesia. Of these elements, the last letter of the last one uttered its voice, and this sound going forth generated its own elements after the image of the [other] elements, by which he affirms, that both the things here below were arranged into the order they occupy, and those that preceded them were called into existence.
He also maintains that the letter itself, the sound of which followed that sound below, was received up again by the syllable to which it belonged, in order to the completion of the whole, but that the sound remained below as if cast outside. But the element itself from which the letter with its special pronunciation descended to that below, he affirms to consist of thirty letters, while each of these letters, again, contains other letters in itself, by means of which the name of the letter is expressed.
And thus, again, others are named by other letters, and others still by others, so that the multitude of letters swells out into infinitude. You may more clearly understand what I mean by the following example:— The word Delta contains five letters, viz., D, E, L, T, A: these letters again, are written by other letters, and others still by others. If, then, the entire composition of the word Delta [when thus analyzed] runs out into infinitude, letters continually generating other letters, and following one another in constant succession, how much vaster than that [one] word is the [entire] ocean of letters!
And if even one letter be thus infinite, just consider the immensity of the letters in the entire name; out of which the Sige of Marcus has taught us the Propator is composed. For which reason the Father, knowing the incomprehensibleness of His own nature, assigned to the elements which He also terms Æons, [the power] of each one uttering its own enunciation, because no one of them was capable by itself of uttering the whole.
Source: Adversus haereses (New Advent)