In part 3 how did Dickens use the events (the things that happened) in Great Expectations to develop the theme of crime and guilt?

As the plot unfolds, the characters develop; the sense of guilt, however, remains unchanging until the primary character, Pip, completes his transformation. This sense of guilt is thematically intertwined with the other themes of crime and punishment and the fallacy of human error; for Pip, it translates into a form of self-imposed guilt. Dickens’s narrator recounts Pip’s journey from a focus on false values to the development of self-awareness and moral fortitude. Early in the novel, Pip finds himself involved in an act of criminal complicity as he steals in order to aid the convict, Magwitch, an act that creates in the young boy immense feelings of guilt:

My state of mind regarding the pilfering from which I had been so unexpectedly exonerated, did not impel me to frank disclosure;... But I loved Joe -- perhaps for no better reason in those early days than because the dear fellow let me love him -- and, as to him, my inner self was not so easily composed. It was much upon my mind (particularly when I first saw him looking about for his file) that I ought to tell Joe the whole truth. Yet I did not, and for the reason that I mistrusted that if I did, he would think me worse than I was. The fear of losing Joe’s confidence, and of thenceforth sitting in the chimney-corner at night staring drearily at my for ever lost companion and friend, tied up my tongue. (33; ch. 6)

From the outset of the novel, therefore, the young Pip becomes embroiled in a world of criminal behavior in which his guilt constantly torments him. Instead of dissipating with time, Pip’s sense of guilt appears to overwhelm his consciousness until it becomes an integral part of his character.