Money and evil
Godric's life is one of evil in the standard Christian sense, because he exploits the poor and needy by tricking them into paying him money for religious hope. He experiences the world through the imagery of money, hoping to find clever ways to scheme religious dopes out of their hard-earned money. He figures, if they're stupid enough to hand me their money, then I deserve to have it, and they deserve to lose it. This imagery shows that religion has a dark side, because smart people often use religion to con "believers" out of their money.
Blood and judgment
By being focused on his own wallet, Godric wanders right into blood-guilt and judgment. He doesn't hesitate to steal blood from a dead man, a martyr from a church riot. He quickly concludes that religious people will pay for the blood as a religious token or relic. He doesn't see any chance of judgment, and when he decides to kill an innocent animal to sell its blood under false pretenses, he covers his hands in blood again. The imagery is of him with his hands covered in blood, convinced that he will never have to answer for his evil ways.
The occult and spiritually heinous
The use of blood imagery and the death of a cat suggest that Godric's life has become occult and spiritually heinous. The religious saints among his community experience him through this imagery, because they can see that there is deep-rooted evil in his life. He abandons his family to die, and manipulates his community into making him rich. The occult, witchy imagery points to his corruption, as if he has become a magician of evil magic.
Enlightenment and mysticism
When he travels to Rome, he doesn't expect to be confronted by a servant of God, but he finds his experience of Rome spiritually enlightening, challenging, and suggestive. He realizes that Gilian's confrontation has a sublime layer on it; on one level, it's just two humans talking on the earth. On another level, he finally wonders whether life on earth is a judgment. He realizes that he believes in God, and he believes his soul is being judged, and he arrives at the conclusion that he should repent of evil and give his life over to reconnecting with the God he was happy to spurn. Although he doesn't arrive at the popular religion of his village, he cannot help but admit to himself that life is too mystical and synchronous for their not to be an architect behind reality who designs human fates. The conversion makes him a mystic.
