Divine Love and Wisdom #12
12. The ordinary concept of God among Christians is a concept of a person because God is called a person in the Athanasian doctrine of the Trinity. The better educated, though, claim that God is invisible. This is because they cannot understand how a human God could have created heaven and earth and filled the universe with his presence, along with other things that pass the bounds of understanding as long as people do not realize that Divinity is not in space. Still, people who turn to the Lord alone think of one who is both divine and human, and therefore think of God as a person.
Divine Love and Wisdom #289
289. This shows us the senselessness of concepts people have when they think about God in nonhuman terms and about divine attributes as not being in a human God. Separated from person, these concepts are nothing but theoretical constructs.
On God as the essential person, from whom we are human by virtue of our acceptance of love and wisdom, see 11-13 above. I stress this here for the sake of what follows, to make it clear that the universe was created by God because God is a person.