Cormac Mccarthy said this quote

The priest therefore saw what the anchorite could not. That God needs no witness. Neither to himself nor against. The truth is rather that if there were no God then there could be no witness for there could be no identity to the world but only each man's opinion of it. The priest saw that there is no man who is elect because there is no man who is not. To God every man is a heretic.