Albert Barnes Commentary 1 Samuel 28:8

"And Saul disguised himself, and put on other raiment, and went, he and two men with him, and they came to the woman by night: and he said, Divine unto me, I pray thee, by the familiar spirit, and bring me up whomsoever I shall name unto thee." — 1 Samuel 28:8 (ASV)

Divine - Compare to 1 Samuel 6:2, note; Numbers 23:23, note.

Bring me him up - The art of the ventriloquist seems to have always been connected with necromancy. The Greeks had necromancers who called up departed spirits to give answers to those who consulted them.