'Spirits' in the Bible

Now Samuel was dead, and all Israel had lamented him, and buried him in Ramah, even in his own city. Saul had put away those who had familiar spirits, and the wizards, out of the land.

The woman said to him, "Behold, you know what Saul has done, how he has cut off those who have familiar spirits, and the wizards, out of the land. Why then do you lay a snare for my life, to cause me to die?"