1 Samuel 28:7-8

And Saul saith to his servants, ‘Seek for me a woman possessing a familiar spirit, and I go unto her, and inquire of her;’ and his servants say unto him, ‘Lo, a woman possessing a familiar spirit in En-dor.’ And Saul disguiseth himself and putteth on other garments, and goeth, he and two of the men with him, and they come in unto the woman by night, and he saith, ‘Divine, I pray thee, to me by the familiar spirit, and cause to come up to me him whom I say unto thee.’