God grant me the serenity...

This famous prayer reoccurs throughout the novel. This is yet another argument for the novel's major theme of fate. The prayer asks God to give the person the ability to "accept the things [they] cannot change." Vonnegut brings up religion in the book by lessening the effect of Jesus and religion by discussing the views of those on Tralfamadore. He disagrees with the Church's interpreatation of Jesus. Vonnegut uses the ideas of religion to reiterate his ideas on fate.