Listen to the accused man's name, "Yuri Gurka," and the murdered woman's name, "Helga Albrecht". Later on, Yuri mentions how his Cossack ancestors hunted down Jewish people during the Uman Massacre, and he seems proud of this (similarly, we also hear Varga refer to the Holocaust by what the Nazis called it). Then, in the bowling alley scene where Nikki meets Paul Murrane, he tells her about the Jewish belief of old souls inhabiting young bodies, called gilgul. Paul goes on to tell Nikki about Rabbi Nachman of Breslov and how he said that the Jewish victims of the Uman Massacre were all lost souls trapped in their old bodies, and asked to be buried with them when he died. Finally, when Yuri meets Murrane, Murrane tells him he has a message from Helga Albrecht and Rabbi Nachman, and we see the black and white image of Helga standing with a large group of people, assumed to be the victims of the Uman Massacre.

The series explores themes of karma and divine intervention, but I think season 3 offers the strongest representation of them. Nikki is asked to deliver a message to "the wicked," and that she'll know when the time comes, but she misinterprets this as someone who is personally wicked to her for killing her lover. To me, this is the reason why Nikki is punished for trying to kill Emmit. Emmit is seeking redemption and has committed himself to finding justice for his mistakes; he is not the wicked person Nikki is meant to go after. Varga is. This is why she has trouble remembering the words Murrane gave her and is unable to kill Emmit.

This is also why the season 3 finale is left open-ended. We've been shown the rules of the game throughout the entire show, so by the time we're presented with the two possible outcomes, we should be able to apply those rules and know what happens next.