Answer:
What is it which builds things up? Lays mountains low? Dries up lakes, and makes things grow? Cares not a whim about your passing? And is like few other things, because it is everlasting?
Scythe of darkness, Shadow’s light. Guiding eye of thirteenth sight.
Who is that with a neck and no head, two arms and no hands? What is it?
I can run but not walk. Wherever I go, thought follows close behind.
People are hired to get rid of me. I'm often hiding under your bed. In time I'll always return you see. Bite me and you're surely dead.
What is always coming but never arrives?