If we knew for sure that there was life beyond the grave, we would not fear death. If we did not fear death, we would not have any fear at all.
There is a vast supply of information out there about the afterlife; much of it written by modern doctors and scientists. Medical science is now admitting that they cannot fully explain what a near death experience is. Just when they thought they had it all figured out, saying it was all a chemical reaction in the dying brain, something else comes along and topples their theory. One of the things that science cannot explain is that many people who had near death experiences were able to accurately describe events that were taking place miles away as family members scrambled to get to the hospital. There are many other things that cannot be explained as well, it is as if the Higher Powers are showing man that he does not have it all figured out. If you have a great fear of death, you may want to read some of the books out there that describe what people saw when death touched them, even for a minute or so...... You may be surprised at what you find out, and this will naturally help to diminish your own fears.