1 Samuel 28:3, 7-9

Meanwhile, Samuel had died, and all Israel had mourned for him. He was buried in Ramah, his hometown. And Saul had banned from the land of Israel all mediums and those who consult the spirits of the dead.

Saul then said to his advisers, “Find a woman who is a medium, so I can go and ask her what to do.” His advisers replied, “There is a medium at Endor.” So Saul disguised himself by wearing ordinary clothing instead of his royal robes. Then he went to the woman’s home at night, accompanied by two of his men. “I have to talk to a man who has died,” he said. “Will you call up his spirit for me?” “Are you trying to get me killed?” the woman demanded. “You know that Saul has outlawed all the mediums and all who consult the spirits of the dead. Why are you setting a trap for me?”