All angels bring revelations and tidings of their superiors. The first bring word of God who is their inspiration, while the others, according to where they are, tell of those inspired by God... the holiest of the seraphim 'cry out to one another' (Is. 6:3)... this shows that the first ranks pass on to the second what they know of God.
Pope DionysiusWe make assertions and denials of what is next to [the Divine Nature], but never of It, for It is both beyond every assertion, being the perfect and unique cause of all things, and, by virtue of Its preeminently simple and absolute nature, free of every limitation, beyond every limitation; it is also beyond every denial.
Pope DionysiusThe word of God has provided nine explanatory designations of the heavenly beings... the first group is forever around God and is said to be permanently united with Him ahead of any of the others and with no intermediary. Here there are the most holy 'thrones' and the orders said to possess many eyes and many wings, called in Hebrew the 'cherubim' and 'seraphim'... The second group... is made up of 'authorities,' 'dominions,' and 'powers.' And the third, at the end of the heavenly hierarchies, is the group of 'angels,' 'archangels,' and 'principalities.'
Pope Dionysius...we must all offer up a hymn of praise to the God... who is 'Lord of lords' (Deut. 10:17, Ps. 136:1, I Tim. 6:15, Rev. 17:14, 19:16)... Lordship is not simply a matter of being superior with respect to inferiors but a complete possession of all that is beautiful and good, and is furthermore a true and unshakable stability.
Pope DionysiusWhat has actually to be said about the Cause of everything is this. Since it is the Cause of all beings, we should posit and ascribe to it all the affirmations we make in regard to beings, and, more appropriately, we should negate all these affirmations, since It surpasses all being. Now we should not conclude that the negations are simply the opposites of the affirmations, but rather that the cause of all is considerably prior to this, beyond privations, beyond every denial, beyond every assertion.
Pope Dionysius...God does not possess a private knowledge of Himself and a separate knowledge of all the creatures in common. The universal Cause, by knowing Itself, can hardly be ignorant of the things which proceed from It and of which It is the source. This, then, is how God knows all things, not by understanding things, but by understanding Himself.
Pope Dionysius