...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 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 name 'cherubim' means 'fullness of knowledge' or 'outpouring of wisdom'... The name cherubim signifies the power to know and to see God, to receive the greatest gifts of His light, to contemplate the divine splendor in primordial power, to be filled with the gifts that bring wisdom and to share these generously with subordinates as a part of the beneficent outpouring of His wisdom.
Pope Dionysius...if we know God our knowledge of... everything will be brought to perfection, and, in so far as is possible, the infinite, divine and ineffable dwelling place (cf. Jn. 14:2) will be ours to enjoy. For this is what our sainted teacher said in his famous philosophical aphorism: 'Then we shall know as we are known' (I Cor. 13:12), when we mingle our god-formed mind and divine reason to what is properly its own and the image returns to the archetype for which it now longs.
Pope DionysiusOne can take eternity and time to be predicates of God since, being the Ancient of Days, He is the cause of all time and eternity. Yet He is before time and beyond time and is the source of the variety of time and of the seasons. Or again, He precedes the eternal ages, for He is there before eternity and above eternity, and 'His kingdom is an everlasting kingdom' (Ps. 145:13). Amen.
Pope Dionysius