Many scholars note Steinbeck for his many uses of Christian imagery within The Grapes of Wrath. The largest implications lie with Tom Joad and Jim Casy, who are both interpreted as Christ-like figures at certain intervals within the novel. These two are often interpreted together, with Jim Casy representing Jesus Christ in the early days of his ministry, up until his death, which is interpreted as representing the death of Christ. From there, Tom takes over, rising in Casy's place as the Christ figure risen from the dead.
However, the religious imagery is not limited to these two characters. Scholars have regularly inspected other characters and plot points within the novel, including Ma Joad, Rose of Sharon, Rose of Sharon's stillborn child, and Uncle John. In an article first published in 2009, Ken Eckert even compared the migrant's movement west as a reversed version of the slaves' escape from Egypt in Exodus. Many of these extreme interpretations are brought on by Steinbeck's own documented beliefs, which Eckert himself refers to as "unorthodox".