1 Samuel 28

I think that that at times, the writers of the Old Testament many times wrote of the event but failed to point out the truth related to that event.  I think this is the case as Saul, having lost all communications with the Lord due to his disobedience, pride, wicked heart, and loss of the Spirit of the Lord, and also the prophet Samuel with his passing, approaches a sorcerer (woman with a familiar spirit) to get direction whereby -

"Then said the woman, Whom shall I bring up unto thee? And he said, Bring me up Samuel."  (Old Testament | 1 Samuel 28:11)

According to the Joseph Smith translation, the woman would only hear words.  Saul asked

"...What form is he of? And she said, An old man cometh up; and he is covered with a mantle. And Saul perceived that it was Samuel, and he stooped with his face to the ground, and bowed himself.

15 ¶ And Samuel said to Saul, Why hast thou disquieted me, to bring me up? And Saul answered, I am sore distressed; for the Philistines make war against me, and God is departed from me, and answereth me no more, neither by prophets, nor by dreams: therefore I have called thee, that thou mayest make known unto me what I shall do.
16 Then said Samuel, Wherefore then dost thou ask of me, seeing the LORD is departed from thee, and is become thine enemy?
17 And the LORD hath done to him, as he spake by me: for the LORD hath rent the kingdom out of thine hand, and given it to thy neighbour, even to David:
18 Because thou obeyedst not the voice of the LORD, nor executedst his fierce wrath upon Amalek, therefore hath the LORD done this thing unto thee this day.
19 Moreover the LORD will also deliver Israel with thee into the hand of the Philistines: and to morrow shalt thou and thy sons be with me: the LORD also shall deliver the host of Israel into the hand of the Philistines.
20 Then Saul fell straightway all along on the earth, and was sore afraid, because of the words of Samuel..."  (Old Testament | 1 Samuel 28:14 - 20)

As one reads these words, it almost seems like Samuel really was called up from the dead.  Obviously this is not how true revelation comes for we know  -

"...Satan is abroad in the land, and he goeth forth deceiving the nations..."  (Doctrine and Covenants | Section 52:14)

And in doing so, John taught -

"For they are the spirits of devils, working miracles..."  (New Testament | Revelation 16:14)

I believe this writer failed to make this clear.  This was not true revelation from the Lord.