Answer:
This thing all things devours: Birds, beasts, trees, flowers; Gnaws iron, bites steel; Grinds hard stones to meal; Slays king, ruins town, And beats high mountains down.
Hard to catch, easy to hold. Can't be seen, unless it's cold
Covered in stone and sun. It's home to many but also none. What is it?
Neither bought nor sold but more valuable than gold. It is built but not by hand. What is it?
Fatherless and motherless. Born without sin, roared when it came into the world. And never spoke again.
I have a few points but we're not competing. I'll help you win when you're eating. What am I?