In Christianity, Jesus Christ’s atonement for all humankind’s sins through his crucifixion holds out the possibility of forgiveness to anyone who believes in him. The narrator may be referring to this Christian theology when he claims that religion’s true purpose is to establish innocence, not guilt. His contemptuous claim that this makes religion a “laundering venture” suggests that the narrator is too invested in universal human guilt to be genuinely interested in the possibility of religious forgiveness. Meanwhile, his reference to a three-year laundering venture that “wasn’t called religion” is ambiguous. He may be referring to the Holocaust; though the Holocaust is usually dated from 1941 to 1945, most Holocaust victims died 1942–1945, which would fit with the three-year timeline. If he does mean the Holocaust, he is suggesting that Nazi German anti-Semitism essentially consisted in declaring non-Jewish people clean or innocent
by demonizing Jewish people. In this view, political violence against minority groups is a kind of scapegoating, “proving” the innocence and goodness of the majority by projecting all evil onto a minority group and then killing them.