1 Samuel 28:7-8

Then Saul said to his servants, “Seek for me a woman who is a medium, that I may go to her and inquire of her.” And his servants said to him, “Behold, there is a woman who is a medium at En-dor.” Then Saul disguised himself by putting on other clothes, and went, he and two men with him, and they came to the woman by night; and he said, “Conjure up for me, please, and bring up for me whom I shall name to you.”