The difficulty in philosophy is to say no more than we know. - Ludwig Wittgenstein

"Suppose that the colour struck you as brighter on one day than on another; would you sometimes say: "I must be wrong, that colour is certainly the same as yesterday"? This shews that we do not always resort to what memory tells us as the verdict of the highest court of appeal."

Death is not an event of life. Death is not lived through.
If by eternity is understood not endless temporal duration but timelessness, then he lives eternally who lives in the present.
Our life is endless in the way that our visual field is without limit.

The primary question about life after death is not whether it is a fact, but even if it is, what problems that really solves.