In "Selections," Allen is little more than a parody of himself, a humorous performance of Woody Allen, as he is perceived by the public: as an absurd, hyperaware, worrying comedian. The idea that Allen is presented here as the private self is ironic considering that, clearly, this work is based on the impression he's given the world.
The character of Woody in "God," existing as nothing more than a largely indifferent disembodied voice, represents a deist conception of divinity. Like the deist God, Woody is content to not interfere with his now living and breathing creation. Instead, he tells Diabetes to let him know how the play turns out. This cosmology suggests that God created the created the Earth and, having turned it over to mankind, washed his hands of it entirely.