1 Cor 11:30
For this reason many among you are weak and sick, and a number sleep.
1 Thessa 4:13~14
Brothers, we do not want you to be ignorant about those who fall asleep, or to grieve like the rest of men, who have no hope. We believe that Jesus died and rose again and so we believe that God will bring with Jesus those who have fallen asleep in him.
In the verses above, we can see that God's viewpoint of death is being asleep. When we die, we are just asleep, according to the Bible! If we are asleep then, we shall arise again.
Where do we go when we are asleep? Let's look at Luke 23:43
Jesus answered him, "I tell you the truth, today you will be with me in paradise."
Jesus told the criminal that is also being cruficied, (he was a criminal but he gave Christ His proper place in his remark, in essence acknowledged and accepted Christ) that he shall enter paradise today. Meaning that when the criminal dies today, Jesus told him that he shall enter paradise. I believe that when we die, we are asleep, yet we shall enter paradise. The context of being asleep might be having a rest or from the perspective of our physical body, being absent from any physical activity. However I believe that our spirit shall be alive and having great fun in Paradise
1 Cor 15:21
For since a man came death, by a man also came the resurrection of the dead. For as in Adam all die, so also in Christ all will be made alive
1 Cor 15:54
But when this perishable will have put on immortality, then will come about the saying that is written "Death is swallowed up in victory"
Therefore my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, knowing that your toil is not in vain in the Lord.