1 Samuel 28:7-8

And Saul said to his servants, "Seek for me a woman having a divining spirit, and I will go to her, and consult through her." And his servants said to him, "There is a woman having a divining spirit at Endor." Therefore, he changed his usual appearance, and he put on other clothes. And he went, and two men with him, and they came to the woman by night. And he said to her, "Divine for me, by your divining spirit, and raise up for me whomever I will tell you."