'Deep' in the Bible

And David put his hand in his bag and took out a stone and sent it from his leather band straight at the Philistine, and the stone went deep into his brow, and he went down to the earth, falling on his face.

So David took the spear and the vessel of water from Saul's head; and they got away without any man seeing them, or being conscious of their coming, or awaking; for they were all sleeping because a deep sleep from the Lord had come on them.