Death is sometimes called the greatest adventure.
You are Mind, Body and Spirit.
Death is dropping the body. That is the first stage. Thereafter, there is no suffering. Pain and suffering are only functions of the body.
The second stage is discarding the mind and all its impressions and attachments. Suffering and punishment are discarded; you are a witness to your mind, and your mind leaves off all such impressions.
All is left is Being, Awareness and Bliss.
Thereafter, you journey to encounter the Divine.
A second opinion: Death is when you stop living. The heart stops beating, blood begins to coagulate, and the brain shuts down after a few hours.