If voluntary, usually associated with unfinished responsibilities. Returning to the body. Most near-death experiences are pleasant, but others are deeply frightening. There is no death - at least, not as we think of it. Death is not oblivion.
Death is like falling asleep or like waking up.
We leave one state of consciousness and enter another. Death means dying to the physical world. It also means being born into the spirit world. When we are born into this physical world, we fall asleep and forget who we really are. When we are born into the spirit world, we awaken and remember who we really are.