1 Samuel 28:3-8

Now Samuel was dead, and all Israel had mourned for him and buried him in his own town of Ramah. Saul had expelled the mediums and spiritists from the land. The Philistines assembled and came and set up camp at Shunem, while Saul gathered all Israel and set up camp at Gilboa. When Saul saw the Philistine army, he was afraid; terror filled his heart. He inquired of the LORD, but the LORD did not answer him by dreams or Urim or prophets. Saul then said to his attendants, “Find me a woman who is a medium, so I may go and inquire of her.” “There is one in Endor,” they said. So Saul disguised himself, putting on other clothes, and at night he and two men went to the woman. “Consult a spirit for me,” he said, “and bring up for me the one I name.”