Jubal... is a devout and fierce individualist in a world filled with cults and bureaucracies, and by novel's end it is he, not Jill nor Mike, that is still a stranger, still tilting against the windmills. He honestly believes in his own free will, which Mike, Jill, and the Fosterites misinterpret as a pandeistic urge, 'Thou art God!' Mike, by contrast, readily abandons his Martian beliefs for human ones, even as he claims to merely find a congress between them.
Why does calling God the author of sin demand a pandeistic understanding of the universe effectively removing the reality of sin and moral law.
If divine becoming were complete, God's kenosis --God's self-emptying for the sake of love--would be total. In this pandeistic view, nothing of God would remain separate and apart from what God would become. Any separate divine existence would be inconsistent with God's unreserved participation in the lives and fortunes of the actualized phenomena.