'Deep Shadow' in the Bible

Before I go—and I shall not return—To the land of darkness and deep shadow,

The land of utter gloom as darkness itself,Of deep shadow without order,And which shines as the darkness.”

“Man puts an end to darkness,And to the farthest limit he searches outThe rock in gloom and deep shadow.

“There is no darkness or deep shadowWhere the workers of iniquity may hide themselves.