On a similar vein, this is an example of how long eternity is:
Image the time it would take one single bird to pick up a single grain of sand on the east coast, fly to the west coast, drop the grain of sand, and the fly back to the east coast. Then imagine the time it would take for that same bird to move all the sand from the entire east coast to the west coast - one grain at a time.
Now picture a line that runs from earth to the moon and continues on - forever. The time it took that bird to move the sand is a single point on this line. ..........