'Asleep' in the Bible

Then, rising on his knees, he cried aloud, "Lord, do not reckon this sin against them." And with these words he fell asleep.

Now when Herod was on the point of taking him out of prison, that very night Peter was asleep between two soldiers, bound with two chains, and guards were on duty outside the door.

For David, after having been useful to his own generation in accordance with God's purpose, did fall asleep, was gathered to his forefathers, and did undergo decay.