Bede

And Saul said to his servants: Seek me a woman who has a familiar spirit, etc. Denied an answer by the Lord, Saul sought a woman with an unclean spirit, through whom he might inquire; and with the cessation of the prophets and the ceremonies of old after the Lord's passion, the people of the Jews consult and frequent the synagogue of Satan, such as today is their synagogue, having a familiar spirit, which in their language signifies the mouth of the abyss. Nor is anything understood better than entrance into eternal punishments. …

Commentary on Samuel ↗