He knew that something unexpected might happen, and he hardly dared to hope that they would pass without fearful adventure over those great tall mountains with lonely peaks and valleys where no king ruled. They did not. All was well, until one day they met a thunderstorm - more than a thunderstorm, a thunder-battle. You know how terrific a really big thunderstorm can be down in the land and in a rivervalley; especially at times when two great thunderstorms meet and clash. More terrible still are thunder and lightning in the mountains at night, when storms come up from East and West and make war. The lightning splinters on the peaks, and rocks shiver, and great crashes split the air and go rolling and tumbling into every cave and hollow; and the darkness is filled with overwhelming noise and sudden light.
“Over Hill and Under Hill” - The Hobbit - J.R.R. Tolkien
“I am so sorry to keep you waiting!” he was going to say, when he saw that it was not Gandalf at all. It was a dwarf with a blue beard tucked into a golden belt, and very bright eyes under his dark-green hood. As soon a the door was opened, he pushed inside, just as if he had been expected.
He hung his hooded cloak on the nearest peg, and “Dwalin at your service!” he said with a low bow.
“Bilbo Baggins at yours!” said the hobbit, too surprised to ask any questions for the moment. When the silence that followed had become uncomfortable, he added: “I am just about to take tea; pray come and have some with me.”
“An Unexpected Party” - The Hobbit - J.R.R. Tolkien