In the Hobbit by JRR Tolkein Bilbo Baggins has met Gollum for the first time. Bilbo is lost and needs to find his way out of Gollum's cave. Gollum will show him the way out if he can answer a riddle.

This thing all things devours,
Birds, beasts, trees, flowers;
Gnaws iron, bites steel;
Grinds hard stone to meal;|
Slays king, ruins town,
And beats high mountain down.

Bilbo is stumped. He doesn't know the answer to the riddle and after being pressured by Gollum says, "Give me time." Gollum hears the word "time" and mistakenly takes it as Bilbos answer, which of course is right. Time devours all things, even massive Temples.