Somebody dreams about immortality to a sense of respect and awe that you feel for that person. Perhaps his weight in your eyes will increase markedly due to the event in which you will be involved both.
If you dream that you yourself possess immortality, it is a good sign. If on your way to the target and the obstacles will appear, you can easily overcome them.
I dreamed that you have invented an elixir of immortality, - so, in your life there comes a difficult period of misunderstanding and loneliness.
If you dream you heard or read the news, that people can be immortal, then waking someone you know is seriously ill.