O son of noble family, this is called the experience of the four wisdoms combined, the passage-way of Vajrasattva. At this time, remember your Guru's previous teachings on the showing. If you remember the meaning of the showing you will have faith in your earlier experiences, and so you will recognize them, like the meeting of mother and son or like seeing old friends again. As though cutting off doubt, you will recognize your own projections and enter the pure, changeless path of the dharmata; and through that faith a continuous meditative state will arise, and you will dissolve into the great self-existing form of wisdom and become a Sambhogakaya Buddha who never falls back.
At death, we lose everything we thought was real. Unless we can let go of all the things we cherish in our life, we are terrified. If we cannot stop struggling to hold on to our old life, all our fear and yearning will drag us into yet another painful reality.
Remember the clear light, the pure clear white light from which everything in the universe comes, to which everything in the universe returns; the original nature of your own mind. The natural state of the universe unmanifest. Let go into the clear light, trust it, merge with it. It is your own true nature, it is home.
You must be ready to accept the possibility that there is a limitless range of awareness for which we now have no words; that awareness can expand beyond range of your ego, your self, your familiar identity, beyond everything you have learned, beyond your notions of space and time, beyond the differences which usually separate people from each other and from the world around them.