'Deep' in the Bible

“It is He who reveals the profound and hidden things;He knows what is in the darkness,And the light dwells with Him.

Now as he (Gabriel) was speaking with me, I drifted into a deep sleep (unconsciousness) with my face to the ground; but he touched me and made me stand [where I had stood before].

Then I heard the sound of his words; and when I heard the sound of his words, I fell on my face in a deep sleep, with my face toward the ground.