Gregory the Dialogist

We have said there are nine orders of angels, because we know from the testimony of sacred Scripture that there are angels, archangels, virtues, powers, principalities, dominations, thrones, cherubim, and seraphim. The apostle Paul also enumerates the names of four orders to the Ephesians, saying: "Above every principality, and power, and virtue, and domination." Writing again to the Colossians, he says: "Whether thrones, or powers, or principalities, or dominations." He had already described dominations, principalities, and powers when speaking to the Ephesians; but when about to say these things also to the Colossians, he added thrones, about which he had not yet said anything to the Ephesians. Therefore, when thrones are joined to those four which he mentioned to the Ephesians—that is, principalities, powers, virtues, and dominations—there are five orders that are specifically expressed. When angels and archangels, cherubim and seraphim are added to these, without doubt nine orders of angels are found to exist.

Subjects are to be admonished in one way, superiors in another, but the former in such a way that subjection may not crush them; the latter, that their exalted position may not lift them up; the former; that they should not do less than is ordered; the latter, that they should not command more than is just; the former, that they submit with humility; the latter, that they be moderate in the exercise of their superiority. For it is said to the former, and this can be understood figuratively: “Children, obey your parents in the Lord.” But superiors are commanded: “Fathers, do not provoke your children to anger.” Let the former learn to order their interior dispositions before the eyes of the hidden Judge; the others, how to set outwardly the example of a good life to those committed to them.

Slaves are to be admonished in one way, masters in another. That is, slaves are to be admonished to consider always the lowliness of their condition; masters, ever to bear in mind their own nature, namely, that they have been created equal to their slaves. Slaves are to be admonished not to despise their masters, lest they offend God by their proud opposition to his ordinance. Masters are also to be admonished that they offend God by priding themselves on his gift to them, without realizing that they who are held in subjection by reason of their state of life are their equals in virtue of their common humanity.