1 Samuel 28:7-8

7Then Saul said to his courtiers, “Find me a woman who is a medium, so I may go to her and inquire through her.” So his courtiers said to him, “Behold, there is a woman that is a medium at En-dor.”

8So Saul disguised himself, put on other clothes, and went with two other men, and they reached the woman by night. Then he said, “Please conjure up for me a ghost—bring up for me the one I will name to you.”