We shall not all sleep, but we shall all be changed. (1 Cor 15:51)

To be asleep is to be asleep in Adam. To be awake is to be awake in Christ.  Adam fell asleep and I don't read where he woke up.
 
Therefore let us not sleep, as do others; but let us watch and be sober.  For they that sleep sleep in the night; (1 Thes 5:6)
As for me, I will behold thy face in righteousness; I shall be satisfied, when I awake, with thy likeness. (Ps 17:15)

Awake to righteousness, and sin not; (1 Cor 15:34)

Knowing the time, that now it is high time to awake out of sleep; for now is our salvation nearer than when we believed (Rom 13:11).

To reckon the old man (Adam) dead you must declare the New (Christ).  Declaring the New (Christ) is awakening to the reality of Christ in you.  We shall not all sleep!   
Asleep:  to see as Adam (old man) sees things, unrenewed and through the fallen mindset.
Awake:  to see and understand (enlightened eyes) things as He (Christ) sees things, all things in Him and from His exalted, seated and enthroned perspective. 

But Peter and they that were with him were heavy with sleep; and when they were awake, they saw his glory, and the two men that stood with him. (Luke 9:32)

Don't spend your life asleep and miss out on the glory that has been revealed.  Wakeup, stop dreaming and start living in reality of the AWAKENED life.

We shall not all sleep!

Cathy Walker