It is clear both that Samuel's appearance was real and that the woman was utterly unprepared for it.

Why have you deceived me... — …

And when the woman saw Samuel, she cried with a loud voice. —Nothing is clearer from the narration than that the woman of…

And when the woman saw Samuel
The appearance of him whom she took for Samuel; no mention is made of the methods she …

When we go from the plain path of duty, everything draws us further aside, and increases our perplexity and temptation. Saul desires the woman to b…