Answer:
What begins and has no end? What is the ending of all that begins?
A precious stone, as clear as diamond. Seek it out whilst the sun's near the horizon. Though you can walk on water with its power, Try to keep it, and it'll vanish within an hour.
What stays on the ground but never gets dirty?
The more of it there is, the less you see.
I sleep by day, I fly by night. I have no feathers to aid my flight.
What do angels sing in the shower?