Sacrifice

S1, E8: Disturbed by the death of his unborn son Ragnar decides to make the pilgrimage with his family to Uppsala to thank the gods and reflect on his future which he hopes will include a new son. Ragnar has also brought along Athestan who reveals that his Christian faith has waned to the point where he’s accepted the Vikings’ religious views. As Athelstan becomes indoctrinated with the Vikings’ worship of their gods he learns that they believe in sacrificing humans to please these gods and then is shocked to find out that he has been chosen by a priest to be one of those sacrificed.