I also think there's some particular meaning in referring to God as "the author". The whole song is sort of tinted towards literature, which goes along with Cave's father's profession and passion. Cave particularly mentions literary figures like Berryman and Hemingway who were depressed, and I think he's saying that God was a depressed author who put all of his depression into his work like those other writers would have. Just my two cents...
I also think there's some particular meaning in referring to God as "the author". The whole song is sort of tinted towards literature, which goes along with Cave's father's profession and passion. Cave particularly mentions literary figures like Berryman and Hemingway who were depressed, and I think he's saying that God was a depressed author who put all of his depression into his work like those other writers would have. Just my two cents...