I thought it right to quote these few instances from a much larger number of passages, in which our sacred writers express their ideas regarding God, in order to show that, to those who have eyes to behold the venerable character of Scripture, the sacred writings of the prophets contain things more worthy of reverence than those sayings of Plato which Celsus admires. Now the declaration of Plato, quoted by Celsus, runs as follows: “All things are around the King of all, and all things exist for his sake, and he is the cause of all good things.
With things of the second rank he is second, and with those of the third rank he is third. The human soul, accordingly, is eager to learn what these things are, looking to such things as are kindred to itself, none of which is perfect. But as regards the King and those things which I mentioned, there is nothing which resembles them.” I might have mentioned, moreover, what is said of those beings which are called seraphim by the Hebrews, and described in Isaiah, who cover the face and feet of God, and of those called cherubim, whom Ezekiel has described, and the postures of these, and of the manner in which God is said to be borne upon the cherubim.
But since they are mentioned in a very mysterious manner, on account of the unworthy and the indecent, who are unable to enter into the great thoughts and venerable nature of theology, I have not deemed it becoming to discourse of them in this treatise.
Source: Against Celsus (New Advent)