The Lion, the Witch, and the Wardrobe
How we cite our quotes:
"This must be a simply enormous wardrobe!" thought Lucy, going still further in and pushing the soft folds of the coats aside to make room for her. Then she noticed that there was something crunching under her feet. "I wonder is that more moth balls?" she thought, stooping down to feel it with her hands. But instead of feeling the hard, smooth wood of the floor of the wardrobe, she felt something soft and powdery and extremely cold. "This is very queer," she said, and went on a step or two further. (1.23)
The first great transformation in the book is the slow transition from our world to Narnia as Lucy keeps walking further and further back into what seems to be a never-ending wardrobe!
Wrong will be right, when Aslan comes in sight,
At the sound of his roar, sorrows will be no more,
When he bares his teeth, winter meets its death
And when he shakes his mane, we shall have spring again. (8.18)
Aslan's presence will shake up and transform everything in all of Narnia, from the weather to ethics to feelings.
"I've come at last," said he. "She has kept me out for a long time, but I have got in at last. Aslan is on the move. The Witch's magic is weakening." (10.36)
When Father Christmas appears in Narnia, it is a sign that time has begun to pass in a normal way again. The endless winter is being transformed into normal, human, cyclical time with landmarks like holidays.