Through Time to Eternity – Elder Efraim of Arizona
  Raise your mind to the dread judgment seat of Christ —what defense  shall we give on the day of judgment when our deeds are judged? How  frightening is the hour in which the soul waits full of fear to hear the  decision regarding where it will go to dwell eternally!
  The word “eternity” is frightful! To understand in part what eternity  means, I shall give you an example. Imagine that the whole earth is one  big piece of granite, and every thousand years a bird comes to sharpen  its beak on this rock. When the entire rock is worn away by the bird  sharpening its beak, then we shall have some faint notion of what  eternity means —not that we have actually understood eternity,  immortality, or life without end! So this life of ours here on earth  determines our eternity, like flipping a coin: paradise or hell!  Therefore, how much caution must we have!
Selection of passages from the book by Silviu Podariu   
From the book
Councels from the Holy mountain