So it's entirely up to God who he wants to save, in which case Christian proselytizers are just showing off and wasting their time? Is this the Calvinist, double predestination view? God saves some by giving them faith, and he condemns others to Hell, and there's nothing we can do about it but thank our lucky stars if we're on the winning team?

That kind of monotheism is similar to the pantheistic naturalism I explore, in that both entail cosmic monstrosities.