Justice
One of the central themes of this saga is that of justice. After the death of his son, Þorbjörn looks desperately for a kind of justice that Hrafnkel, despite his guilt and regret, is unable to provide. In the end, he is able to get that justice as Hrafnkel is mercilessly stripped of his glory and power. A similar justice is bestowed upon Hrafnkel after he is able to make Samur his subordinate and re-establish his identity.
Faith
Faith is a significant theme in the saga and permeates across the narrative. The pride of Hrafnkel as well as the power he wields is intimately linked with his hold on faith. He is able to erect a temple in the honor of his deity and perform endless rituals. However, when he is humiliated, his temple is destroyed and he loses his grip on his faith. These elements in the saga document the ritualistic lives led by people in Iceland in the 10th century.
Revenge
While this theme is often conflated with the idea of justice, it is quite distinct. While Þorbjörn goes around looking for justice, his acts later in the saga, like the destruction of the temple, point towards an element of revenge.
