Isaias 40:18

And again by Isaiah, “Who shall measure heaven with a span, and the whole earth with his hand?” Behold God’s greatness, and be filled with amazement. Let us worship Him of whom the prophet says, “Before Thy face the hills shall melt, as wax melteth before the fire!” This, says he, is the God “whose throne is heaven, and His footstool the earth; and if He open heaven, quaking will seize thee.” Will you hear, too, what this prophet says of idols? “And they shall be made a spectacle of in the face of the sun, and their carcases shall be meat for the fowls of heaven and the wild beasts of the earth; and they shall putrefy before the sun and the moon, which they have loved and served; and their city shall be burned down.” He says, too, that the elements and the world shall be destroyed. …

And the Socratic Antisthenes, paraphrasing that prophetic utterance, “To whom have ye likened me? saith the Lord,” says that “God is like no one; wherefore no one can come to the knowledge of Him from an image.”

For he shows that the Divinity cannot be captured by a mortal, or apprehended either with feet, or hands, or eyes, or by the body at all. “To whom have ye likened the Lord? or to what likeness have ye likened Him?” says the Scripture. Has not the artificer made the image? or the goldsmith, melting the gold, has gilded it, and what follows.

But some one may contend that two great Supremes may exist, distinct and separate in their own departments; and may even adduce, as an example, the kingdoms of the world, which, though they are so many in number, are yet supreme in their several regions. Such a man will suppose that human circumstances are always comparable with divine ones. Now, if this mode of reasoning be at all tolerable, what is to prevent our introducing, I will not say a third god or a fourth, but as many as there are kings of the earth? Now it is God that is in question, whose main property it is to admit of no comparison with Himself. Nature itself, therefore, if not an Isaiah, or rather God speaking by Isaiah, will deprecatingly ask, “To whom will ye liken me?” Human circumstances may perhaps be compared with divine ones, but they may not be with God. God is one thing, and what belongs to God is another thing. …

14. We would here, as if all nations on the earth were present, make one speech, and pour into the ears of them all, words which should be heard in common: Why, pray, is this, O men! that of your own accord you cheat and deceive yourselves by voluntary blindness? Dispel the darkness now, and, returning to the light of the mind, look more closely and see what that is which is going on, if only you retain your right, and are not beyond the reach of the reason and prudence given to you. Those images which fill you with terror, and which you adore prostrate upon the ground in all the temples, are bones, stones, brass, silver, gold, clay, wood taken from a tree, or glue mixed with gypsum. …

3. Yet even in this state, the man-loving Word, who came for this very reason, that He might seek and find that which was lost, sought to restrain them from such folly, crying and saying, ‘Be ye not as the horse and the mule which have no understanding, whose cheeks ye hold in with bit and bridle.’ Because they were careless and imitated the wicked, the prophet prays in spirit and says, ‘Ye are to me like merchant-men of Phœnicia.’ And the avenging Spirit protests against them in these words, ‘Lord, in Thy city Thou wilt despise their image.’ Thus, being changed into the likeness of fools, they fell so low in their understanding, that by their excessive reasoning, they even likened the Divine Wisdom to themselves, thinking it to be like their own arts. …

74. I know Whose ministers we are, and where we are placed, and whither we are guides. I know the height of God, and the weakness of man, and, on the contrary, his power. Heaven is high, and the earth deep; and who of those who have been cast down by sin shall ascend? Who that is as yet surrounded by the gloom here below, and by the grossness of the flesh can purely gaze with his whole mind upon that whole mind, and amid unstable and visible things hold intercourse with the stable and invisible? For hardly may one of those who have been most specially purged, behold here even an image of the Good, as men see the sun in the water. Who hath measured the water with his hand, and the heaven with a span, and the whole earth in a measure? Who hath weighed the mountains in scales, and the hills in a balance? What is the place of his rest? and to whom shall he be likened?