She [Lucy] gazed up into the large wise face.
“Welcome, child,” he said.
“Aslan,” said Lucy, “you’re bigger.”
“That is becuase you are older, little one,” answered he.
“Not because you are?”
“I am not. But every year you grow, you will find me bigger.”
from chapter 10 of Prince Caspian, the fourth book in the Chronicles of Narnia.
What an amazing truth about Aslan and God- the older I get, the bigger and stronger and wiser He is.