"If God exists, then arguments about him are arguments about the cosmos and of cosmic importance, but if he does not, they are not about anything. In that case, the important questions must be about human beings, and why, for instance, they ever believed that God existed. The issues about religious ethics are issues about the human impulses that expressed themselves in it, and they should be faced in those terms. For those who do not believe in a religious ethics, there is some evasion in continuing to argue about its structure: it distracts attention from the significant question of what such outlooks tell us about humanity. Nietzsche’s saying, God is dead, can be taken to mean that we should now treat God as a dead person: we should allocate his legacies and try to write an honest biography of him."
January 1, 1970
https://en.wikiquote.org/wiki/God_is_dead