Isaiah 8:16-20 - Warning Against Consulting The Dead
16 Bind up the oracle, seal up the law among the disciples. 17 And I waited for Jehovah in his hiding his face from the house of Jacob, and I trusted to him.
18 Behold me and the children which Jehovah gave to me for signs and for wonders in Israel from Jehovah of armies dwelling in mount Zion. 19 And when they shall say to you, Seek ye to necromancers and to wizards peeping and panting: shall not a people seek their God among the living for the dead? 20 To the law and to the testimony if they will not speak according to this word, because no morning is in them.