'Sleeping' in the Bible

Jesus said to him, “Get up; pick up your pallet and walk.”

He said this, and after that said, “Our friend Lazarus has fallen asleep; but I am going there to wake him.”

The disciples answered, “Lord, if he has fallen asleep, he will recover.”

Jesus, however, had been speaking about his death, but they thought that he was speaking about resting or sleeping.