From his teaching series
We have the idea of self-existence or what we call in theology the concept of aseity. When I see that word on a blackboard or when I see it in a textbook, I know that the vast majority of people in the pew have never heard of the word and it’s so obscure and esoteric they don’t care about hearing about the word. But I have to tell you honestly and personally, I see that word, and I get chills up my spine because in that one little word is captured all of the glory of the perfection of God’s being. What makes God different from you, and different from me, and different from the stars, the earthquakes, and any creaturely thing is that God and God alone has aseity—God alone exists by His own power.