Topic > there isn't much left in people; and what's worse, the strength is no longer in me." (20) He believes he can no longer preach because of all the sins he committed while leading the church. He believes that God's grace has abandoned him and that he no longer feels the same way about himself. He has severe guilt for the things he has done, but finds happiness in the way people live their lives and the little treasures it contains. Later, Jim Casy professes, “Maybe I can preach again. People alone on the street, people without land, without a home to go to. They must have some kind of home. (57) This shows how incredibly attracted he is to the people he is. He wants to go out and be with people. This foreshadows how he becomes so intrigued and sympathetic towards migrant workers. His mindset here already shows that his focus is starting to shift... to the center of the paper... he is a disciple of Jim, and continues to carry on his work after his death. Jim Casy began as a man who developed his own spirituality. In the long run, that belief system would only benefit him. Later in the book, he realizes that his purpose in life was to be part of something, to be with people, to bring them together and lead them. his independent role from the rest of the characters has transformed into the active role of a leader who helps his peers. Casy's message of unity helped Tom ultimately achieve mental development. Tom finally transcends his working man mentality and realizes what is happening in California. Without Jim Casy's change from “I” to “We,” the Joad family would not have been able to stay together and develop as people at the end of the novel. Jim Casy opened the eyes of migrant workers and was able to start a long-term workers' revolution.