Deleuze, unique among post-structuralists, was interested in a cosmology/metaphysics. [Most post-structuralists, Derrida being the classic example, were interested in linguistics]. For Deleuze, Western philosophy is too buit traditionally around substance (from Plato through Aristotle on down) and should rather be interested in Event or events. This is somethign akin to Heidegger’s distinction between the Being of beings (Event) and Dasein (being-in-the-world) except that Delueze has a background in physics and mathematics (interestingly) so his view of the Event is much more spatio-temporal than Heidegger’s more cultural-praxis oriented understanding.
The Event Captuo says is that which happens within what is happening but is never captured by what is happening. God for Captuo is a name we use to point to the Event related to the name of God. God then is an Event not a be-ing. It’s a non-essential understanding of God. Event however for me is a little too static. I would prefer Rabbi Cooper’s notion that God is a Verb. God-ing if you will. Event-ing.