Part II of The Experience of God: Being, Consciousness, Bliss contains three chapters on those three aspects of the experience. In “Being” the author says that our wonder at the universe comes from a deep realization that it didn’t have to be this way, it didn’t have to be at all. Some snippets:

All things are subject to time…they possess no complete identity within themselves, but are always in the process of becoming something else, and hence also in the process of becoming nothing at all. There is a pure fragility and necessary incompleteness to any finite thing; nothing has its actuality entirely in itself, fully enjoyed in some impregnable present instant, but must always receive itself from beyond itself, and then only by losing itself at the same time. Nothing within the cosmos contains the ground of its own being….

One knows of oneself, for instance, that every instant of one’s existence is only a partial realization of what one is, achieved by surrendering the past to the future in the vanishing and infinitesimal interval of the present. Both one’s essence and one’s existence come from elsewhere — from the past and the future, from the surrounding universe and whatever it may depend upon, in a chain of causal dependencies reaching backward and forward and upward and downward — and one receives them both not as possessions secured within some absolute state of being but as evanescent gifts….

Simply said, one is contingent through and through, partaking of being rather than generating it out some source within oneself; and the same is true of the whole intricate web of interdependence that constitutes nature.

–David Bentley Hart in The Experience of God