What opinions does casey have about sin and using bad words in The Grapes of Wrath?

In "The Grapes of Wrath," Casey expresses a critical view of traditional notions of sin, suggesting that the moral framework imposed by society often misjudges people's actions. He believes that the use of "bad Words" or profanity can be a reflection of genuine emotion or struggle rather than a moral failing. Casey prioritizes the intent and context of language over the Words themselves, arguing that the social injustices faced by people are far more significant than the language they use. His perspective emphasizes empathy and understanding over rigid moralism.