The fact that the relationship between Obi-Wan and Anakin doesn’t end there but also represents the relationship between what Jedi are and what Force wants. Obi-Wan isn’t just himself but can represent everything right and wrong with the Jedi Order while Anakin is only a human and can fall just as easily.
In Shahnameh, Jamshid was this great king who ruled for centuries but when he started to accept advice from his demon slaves, he got corrupted but he didn’t accepted it because those demons where still slaves. And Zahhak was the prince that was sent by God to punish Jamshid as his chosen champion but Zahhak took it far and didn’t imprisoned him, tried to talk sense to him but killed him. His close relationship with disguised Iblis made him a tyrant, the Serpent King.