'Shadow' in the Bible

“For we are only of yesterday and know nothing,Because our days on earth are [like] a shadow [just a breath or a vapor].

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

The [sunless] land of utter gloom as darkness itself,[The land] of the shadow of death, without order,And [where] it shines as [thick] darkness.”

“He uncovers mysteries [that are difficult to grasp and understand] out of the darknessAnd brings black gloom and the shadow of death into light.

“Like a flower he comes forth and withers;He also flees like a shadow and does not remain.

“My face is red and swollen with weeping,And on my eyelids is the shadow of death [my eyes are dimmed],

“My eye has grown dim (unexpressive) because of grief,And all my [body’s] members are [wasted away] like a shadow.