'Secret' in the Bible

“I will give you the treasures of darkness [the hoarded treasures]And the hidden riches of secret places,So that you may know that it is I,The Lord, the God of Israel, who calls you (Cyrus the Great) by your name.

“I have not spoken in secret,In a corner of a land of darkness;I did not say to the descendants of Jacob,‘Seek Me in vain [with no benefit for yourselves].’I, the Lord, speak righteousness [the truth—trustworthy, a straightforward correlation between deeds and words],Declaring things that are upright.

“Come near to Me, listen to this:From the beginning I have not spoken in secret,From the time that it happened, I was there.And now the Lord God has sent Me, and His [Holy] Spirit.”

Who sit among the graves [trying to conjure up evil spirits] and spend the night in the secret places [where spirits are thought to dwell];Who eat swine’s flesh,And their pots hold the broth of unclean meat;