I know I'll never die by the EVIDENCE. Every day I wake up alive, day after day, week after week, month after month, year after year, decade after decade--it never fails. So the evidence is overwhelming that I'll never die.
Besides, I really WANT it to be true that I'll never die, so I exercised a particle of faith and let the idea work as a seed within me. I followed the admonition of the 32nd chapter of Alma and did not cast it out by unbelief. And the feeling of never dying was verily good in my bosom.
And now because I have tried the experiment, and planted the seed, and it swelled up and sprouted, and began to grow, I must needs know that the seed is good. And now, behold, is my knowledge perfect? Yes, my knowledge is perfect in this thing.
So I KNOW beyond any shadow of a doubt, I know by study AND by faith that I will never die.
I have 'seen' past lives, had medium and channel experiences, and had many other experiences, but still can't say I 'know' anything even though I have a strong belief.
The Alma 32 process works for everything. I planted and watered the seed of belief that I'm sinless and don't need saving or a church. Now I know it's true.
Oooooooook baura no argument here I'm dying and it's a good and natural thing. I have complete faith when I wake up every morning that I'm headed towards death the body keeps getting worse and worse as it ages until it eventually stops. Look at the elderly before they die that's what's going to happen to you and I, I've accepted I'm not the immortal I thought I was when I was 17. I actually don't want to live forever anymore.
From the responses, baura, it's clear some people don't get sarcasm :)
In my experience, those who are convinced (without evidence) that some kind of "afterlife" awaits them are far too quick to cheapen the one lifetime we have evidence for. They're overly willing to give up that one lifetime for some "glorious" cause, being self-assured that they'll be off to some marvelous afterlife by doing so. And they're far too willing to end the one life of others, particularly those they think will be off to some afterlife "judgement" that will doom them to eternity in suffering.
As a case in point, I'm reminded of the famous phrase allegedly spoken by Papal legate and Cistercian abbot Arnaud Amalric prior to the massacre at Béziers, the first major military action of the Albigensian Crusade: