'Deep Sleep' in the Bible
Peter and those with him were in a deep sleep, and when they became fully awake, they saw His glory and the two men who were standing with Him.
And he was in need of food: but while they were getting it ready, a deep sleep came on him;
I was in the town of Joppa, at prayer: and falling into a deep sleep, I saw in a vision a vessel like a great cloth let down from heaven, and it came down to me:
And there sat in a window a certain young man named Eutychus, being fallen into a deep sleep: and as Paul was long preaching, he sunk down with sleep, and fell down from the third loft, and was taken up dead.
according as it hath been written, 'God gave to them a spirit of deep sleep, eyes not to see, and ears not to hear,' -- unto this very day,