"Therefore let us not sleep as do others"

Why does the Bible refer to some people as being asleep, spiritually? Why do their spirits slumber? Here's the thing - people who sleep close their eyes - they are shutting out the Light (remember, in the Bible, light refers to "revelation knowledge"). People prefer darkness when they sleep - they seek it out. So people who slumber spiritually are those who wish to avoid the Light  "Then Jesus spoke to them again saying 'I am the Light of the world: he that follows me shall not walk in darkness, but shall have the Light of life'.  People who are avoiding the Light are avoiding Jesus - the complete summation of all knowledge and revelation of God to mankind, the "fulness of the godhead bodily". They do not want to see - they are blind by choice. It is not that they cannot see but rather that they will not see. But why would men choose to be blind and deaf spiritually? To dwell in darkness rather than light? It is because their deeds are evil and they do not wish to repent of them. "And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil. For everyone that does evil hates the light, neither comes to the light, lest his deeds should be reproved." In the light, our nakedness is exposed. We only wish to hide our nakedness from God when we are using our flesh to sin - before they sinned, Adam and Eve "were both naked, the man and his wife, and were not ashamed." They only became ashamed of their nakedness after they had used their flesh to sin (rebel) against God - who only ever desires our good. This is what it means to take communion in an unworthy manner - The Cross is all about exposing our nakedness, our sin and shame. Jesus became naked on the Cross to expose our nakedness to the Father, who rightly condemned our sin - putting us to death (in Christ) and casting us far from Him - creating a place (hell) where all who choose darkness instead of light may await the final judgement. Holiness refuses to allow sin into His presence. Light and darkness cannot mix - "for what fellowship has righteousness with unrighteousness? and what communion has light with darkness?" :Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you, and I will be a Father to you, and you shall be My sons and daughters, saith the Lord almighty."
So, in a very real sense, taking communion is us bringing our sins into the light, rather than keeping them in darkness. To do this unworthily means we're taking the elements selfishly, for us, for what we can gain, rather than discerning the Body, we only discern our body, not those hurting and suffering the malady of sin around us, needing our love, needing us to declare their sins forgiven and remitted. "But let a man examine himself, and so let him eat of that bread, and drink of that cup, for he that eats and drinks unworthily, eats and drinks damnation to himself, not discerning the Lord's Body. For this cause many are weak and sickly among you, and many sleep". "God has given them the spirit of slumber, eyes that they should not see, and ears that they should not hear."
At the same time that the Cross exposes our sins to the Father, Jesus took the full force of the Faher's wrath upon himself - so that we died in Christ also, as He died upon the Cross, which is why we won't taste the second death. And if we died in Christ, we shall also live in Him - when He was raised from the dead - so were we. So our lives, from beginning to end, our deaths, resurrection, all of it - are found in Christ - past, present and future. In Him we truly do "live, and move and have our being" both now and in the life to come.