Steinbeck was affiliated to the St. Paul's Episcopal Church and he stayed attached throughout his life to Episcopalianism. Especially in his works of fiction, Steinbeck was highly conscious of religion and incorporated it into his style and themes. The shaping of his characters often drew on the Bible and the theology of Anglicanism, combining elements of Roman Catholicism and Protestantism.
Steinbeck distanced himself from religious views when he left Salinas for Stanford. However, the work he produced still reflected the language of his childhood at Salinas, and his beliefs remained a powerful influence within his fiction and non-fiction work. William Ray considered his Episcopal views are prominently displayed in The Grapes of Wrath, in which themes of conversion and self-sacrifice play a major part in the characters Casy and Tom who achieve spiritual transcendence through conversion.[72]
