What is an example of allegory in the novel, Winter of the Witch?

Konstantin's character is an allegory for lost faith. Up until his death, he is convinced that God does not exist, despite being a priest as long as his rival, Sasha. He aligns himself with the Bear because he truly believes that the devil is the only power left in the universe. Because of this, Konstantin becomes the evil that he used to be afraid of. His ability to control people is parallel to the Bear’s own powers, and both drive others to madness. Without belief in a higher cause, Konstantin has nothing but his inherently evil ambition.