In this episode, BT talks with Matt Arnold about Ghosts, Ghouls, and God. The conversation dives deep into the Witch of Endor with a focusing on the cultural aspects that make this interaction in 2 Samuel deeper than it would at first blush seem. In no way is this a definitive answer to the curious story we find, but it does give some illuminating arguments as to why people are forbidden from Necromancy. 

Matt Arnolds Website: https://ghostsghoulsandgod.co.uk/
His Book: The Invisible Dimension