Dionysius the Areopagite lived in the first century A.D. and was the first bishop of Athens.
He gives us these inspiring words:
We see God not only through knowledge but also through ignorance. Although there is spiritual comprehension of him, understanding, knowledge, contact, sense perception, opinion, concept, naming and so on, nevertheless he is neither comprehended, nor explained, nor named. He is nothing existing, but he is also seen in anything existing.
He is ‘all in all’ (I Corinthians 15:28) and yet he is nothing anywhere. He is seen in all by all and yet he is seen in nothing by anyone. With good reason we say this about God, and on the basis of all existence he is praised as in harmony with all of which he is the cause.