Around the time when Richard got caught with a knife.
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The whole knife incident happens when Richard is living with Aunt Addie. Addie was intent on making Richard into a bad example, and punished him for things he did not do. One day at home, when Addie threatens to beat Richard, he grabs a kitchen knife to defend himself. When a religious revival was in progress at church, Granny dragged Richard in hopes of his conversion. When Richard says that he would believe in God if he saw an angel, Granny misunderstands him, thinking that Richard actually has seen an angel. The incident is an embarrassment to Granny and Richard promises to pray out of guilt. Richar, by this time, sees religeon as a vessel for crazy people more than anything else.