I think that INFJs experience death differently than all the other types. Being only 0.5% of the entire human population, their function pattern forms a unique way of perception, which also covers death.
For other types it is basically just an ending of life, but I imagine INFJs reach a moment a clarity, which actually persists postmortem. Think of it as an endless black void that is then filled with the values of all humanity, life and the entire universe. All that knowledge gathers into one tiny spot, which is the INFJ's consciousness, and from there starts expanding, but this time with traces of the INFJ in it. An INFJ becomes a part of the universe, in every sense of the word.
So, that is my theory, now do any INFJs have experiences in that field?