I heard a preacher say once " I sell eternal life , there is no better product. " 

Eternal life ... the two most difficult words to define that I know of. What is life? What is eternity?  Attempting to deal with what is most obvious, I have come to this conclusion.

Each life is a creation of the universe, and the universe or multi-universe is infinite.... so infinite in fact that we can't comprehend it, yet we are it. By the fact that each live is connected to this universe, then life's  particular effect on this infinite universe is also infinite (unless we destroy ourselves). The butterfly effect, when in fact 95% of all matter and energy we have no clue what it is, we are back to humbling ourselves that there may be something like a God.

Would it be reasonable to say that the butterfly is the hand of God? That a small change can be the direct effect of much larger events. How can we actually say that the Butterfly action is not somehow the intentional cause of the hurricane.  As humans we think what we do is intentional. We feel we have free will, that we choose to be better persons or remain unchanged. If we have free will, then a dramatic change of heart, a born again experience would make for a path in life that is totally different than what may have been otherwise. That changed life would have a ripple effect over eternity and therefore on the ultimate character of the universe itself         

This connectivity we see where actions causing reactions over time would imply that every soul that existed in the past was you, and you in turn are eternal in both dimensions past and future .

From this perspective, you become a very important almost a God like being. You become the sum of all the past and a fulcrum to what will be eternity.

Here is where the beauty of Jesus Christ truly shines. The only value of each live is expressed in personal growth, a born again life in fact. A life that shuns the material world and embraces selfless altruism and love of neighbor, a true communion with others.

Do we not feel heaven when we have an epiphany? Is it not heroic to sacrifice our lives for others?  Then obviously hell would be the opposite, to live the opposite, to embrace ignorance, to oppose altruism, to live a material life without care for others. To be ignorant and selfish, if unchanged would be eternal.

Eternity can be envisioned as going outward from us through time, but it can also go in the other direction, inward. We all have eternal lives, its the quality of that eternity that we determine.  

A great documentary BBC-Dangerous Knowledge