The irony of his sister
The sister is an ironic character, because she represents the aspects of Godric's personality that are absent. He is unattached, but she is overly attached. He doesn't care about her, but she desperately loves him, and though she is family, he leaves her to kill herself in his absence. Her role in his life as his family shows how ill-suited for family he really is. He is not empathetic, and he sees his intelligence as a thing to be exploited for personal gain.
The hypocrisy of religious merchandise
Godric makes money by pretending to be religious and mystical, and then once he has gained credence in the eyes of the villagers, he sells them religious trinkets, including the blood of the martyrs, and then the blood of cats. He is a religious hypocrite, because he has no real faith to speak of; he is merely exploiting believers by using their tendency to believe against them. Ironically, this foreshadows his true experience of religion.
The ironic church riot
There is a irony about religion through the whole story, but perhaps the most poignant of these is the riot at church. The church is certainly built around a message of universal love, but religion remains complicated and divisive, and the church is the center of social disorder in the story. Although Godric is not religious, religion is at the center of his life, because it is so important to the village. Dramatic irony abounds, because Godric tacitly accepts religion as a self-explaining phenomenon, but later, he is struck by the mystical aspect of church; why should humans be religious in the first place? Why the chaos around something that seems to matter so little to him?
The ironic use of blood
Godric sells blood to his fellow villagers twice; first he profits off of the death of an honorable man, draining the corpse of its blood and selling it. This is an ultimate sacrilege, but he doesn't care. Ironically, he is immune to the basic common sense that might make him hesitate. After that, he defiles the man further by selling cat blood as if it is the blood of a martyr. He is covering his hands in blood, literally, but dramatic irony keeps him focused on "getting away with it" on earth, never once wondering whether there might actually be a divine judgment.
The staggering irony of conversion
Religious mystics are like baked goods; you take a whole life of experience, and then you throw them in the oven of religious enlightenment, and suddenly, the experience catalyzes into an experience of religious mystery and wonder. This makes the evil of Godric's days into an ironic religious experience. He is like Paul who profited by harassing the Christian community, only to be later converted into the church. Godric's experience of reality is suddenly amazing and confusing, not to mention horrifying and intimidating. He studies the Bible as if he is finally aware of its objective value.
