'Hidden' in the Bible

to those who wait for death that does not come, and search for it more than for hidden treasures,

Why is light given to a man whose way is hidden, and whom God has hedged in?

A rope is hidden for him on the ground and a trap for him lies on the path.

a hidden path no bird of prey knows -- no falcon's eye has spotted it.

He has searched the sources of the rivers and what was hidden he has brought into the light.

For it has been hidden from the eyes of every living creature, and from the birds of the sky it has been concealed.