1 Samuel 28:8

4And the Philistines gathered themselves together, and came and pitched in Shunem: and Saul gathered all Israel together, and they pitched in Gilboa.

5And when Saul saw the host of the Philistines, he was afraid, and his heart greatly trembled.

6And when Saul enquired of the Lord, the Lord answered him not, neither by dreams, nor by Urim, nor by prophets.

7Then said Saul unto his servants, Seek me a woman that hath a familiar spirit, that I may go to her, and enquire of her. And his servants said to him, Behold, there is a woman that hath a familiar spirit at Endor.

8And Saul disguised himself, and put on other raiment, and he went, and two men with him, and they came to the woman by night: and he said, I pray thee, divine unto me by the familiar spirit, and bring me him up, whom I shall name unto thee.

9And the woman said unto him, Behold, thou knowest what Saul hath done, how he hath cut off those that have familiar spirits, and the wizards, out of the land: wherefore then layest thou a snare for my life, to cause me to die?

10And Saul sware to her by the Lord, saying, As the Lord liveth, there shall no punishment happen to thee for this thing.

11Then said the woman, Whom shall I bring up unto thee? And he said, Bring me up Samuel.

12And when the woman saw Samuel, she cried with a loud voice: and the woman spake to Saul, saying, Why hast thou deceived me? for thou art Saul.