"Son of Saul" is a fictional film, but it is set against the horrifying backdrop of the Holocaust, specifically focusing on the experiences of a Jewish prisoner in Auschwitz. While the characters and specific events are not directly based on true stories, the film is deeply rooted in the historical realities of the concentration camps and the atrocities that occurred during World War II. It aims to convey the emotional and moral complexities faced by individuals in such a harrowing environment.

In the Bible, Saul's son is Jonathan. He is a prominent figure in the Old Testament, known for his close friendship with David, who would later become king of Israel. Jonathan is portrayed as a loyal and brave warrior, often caught between his loyalty to his father Saul and his friendship with David. His relationship with David is characterized by deep loyalty and mutual respect, culminating in a covenant of friendship. Jonathan's story highlights themes of loyalty, sacrifice, and the complexities of familial and political allegiance.

"Son of Saul" is a 2015 Hungarian film set in Auschwitz during World War II. It follows Saul Ausländer, a Jewish prisoner who works as a member of the Sonderkommando, tasked with disposing of the bodies of gas chamber victims. After discovering the body of his son among the dead, Saul becomes obsessed with giving him a proper burial. The film explores themes of humanity, grief, and resistance in the face of unimaginable horror, all while being shot in a distinctive, immersive style that closely follows Saul's perspective.

In the Bible, the crippled son of Saul is Mephibosheth. He is introduced in 2 Samuel. After the death of his father, Saul, and his grandfather, Jonathan, Mephibosheth was dropped by his nurse while fleeing, which resulted in him being disabled in both feet. Despite his disability, he was later brought to King David's court, where David showed him kindness for the sake of Jonathan, restoring to him the land of Saul and allowing him to eat at the king's table. Mephibosheth's story highlights themes of grace and loyalty.