Bible Verses About Sleep: A symbol of death

So man lieth down, and riseth not: till the heavens be no more, they shall not awake, nor be raised out of their sleep.

He said unto them, Give place: for the maid is not dead, but sleepeth. And they laughed him to scorn.

And when he was come in, he saith unto them, Why make ye this ado, and weep? the damsel is not dead, but sleepeth.

And all wept, and bewailed her: but he said, Weep not; she is not dead, but sleepeth.

These things said he: and after that he saith unto them, Our friend Lazarus sleepeth; but I go, that I may awake him out of sleep.

Then said his disciples, Lord, if he sleep, he shall do well.

For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him.