What Christians mean by God: God Is

I haven't posted in a while! Sorry! I am still working on part 2 of Protestantism and Authority and will have that out shortly! In the meantime I wanted to share this wonderful video from the Catholicism Series in which Father Barron instructs us on who God is according to Christians. His answer is "God is". God tells us his name is I AM, essentially telling us that He IS, God is Being itself, he is not the greatest creature among other creatures, but instead is the very fabric of Being, the source of all that exists.