Who said "Despair is all that awaits you."?

This quote is attributed to Smaug.

Despair is all that awaits you. - Smaug

"Despair is all that awaits you."

Smaug

"I am fire. I am death."

"You have no idea what you're dealing with."

"I am armored above and below with iron scales and hard gems."

"My armor is like tenfold shields, my teeth are swords, my claws spears."