1 Samuel 28:7-8

Then Saul said to his servants, “Find me a woman who is a medium so I may go and ask her what will happen.” His servants answered, “There is a medium in Endor.” Then Saul put on other clothes to disguise himself, and at night he and two of his men went to see the woman. Saul said to her, “Talk to a spirit for me. Bring up the person I name.”