"Used to howl out the name of Jesus to glory" (20) - Casy.
"i'm scared of stuff so nice. I ain't got faith. I'm scared somepin ain't so nice about it" (91) - Joad.
people like Jim Casy start out with a large amount of their faith put into their god but as The Grapes of Wrath goes on people like Joad start to lose faith because things seem too bad; as if their lord had lost them amid all the other people that are calling for his help.