'Awake' in the Bible

he spends days and nights, now awake, now asleep, while the seed sprouts and grows tall, he knows not how.

It is like a man living abroad who has left his house, and given the management to his servants--to each one his special duty--and has ordered the porter to keep awake.

and He said to them, "My heart is oppressed with anguish to the very point of death: wait here and keep awake."

Then He came and found them asleep, and He said to Peter, "Simon, are you asleep? Had you not strength to keep awake a single hour?