Isaiah 8:16-20

16Bind up the testimony, seal the law and the teaching among my (Isaiah’s) disciples.

17And I will wait for the Lord who is hiding His face from the house of Jacob; and I will look eagerly for Him.

18Listen carefully, I and the children whom the Lord has given me are for signs and wonders [that will occur] in Israel from the Lord of hosts, who dwells on Mount Zion.

19When the people [instead of trusting God] say to you, “Consult the mediums [who try to talk to the dead] and the soothsayers who chirp and whisper and mutter,” should not a people consult their God? Should they consult the dead on behalf of the living?

20[Direct those people] to the law and to the testimony! If their teachings are not in accord with this word, it is because they have no dawn.