He can only be the God Sartre denies. If Sartre were to admit that he even once experienced solitary shame, then his own philosophy would require him to become a theist. And we would owe it all to Jean-Paul Sartre. Mostly, however, we owe Sartre for exposing the dreadfully absurd consequences of denying God by setting ourselves in His place. Sartre ends with an echo of the life lived apart from God as described in the book of Ecclesiastes.
Human being is useless passion . . .
The latter paraphrase is Sartre's own conclusion to his Being and Nothingness , where most of the foregoing rebellion is laid out. This world of vanity and endless conflict that results from Sartre's failed quest for sovereign freedom, however, is necessary only for those who insist upon embarking on it. Sad to say, this includes all of us. We can see reflections of Sartre's quest in our own conflicts. They are all due to our own, or someone else's, desire to rule the world.