I should also add that when I was first introduced to Narnia as a ten year old, I was also a fairly new Christian. Although I did grow up in a Christian home, so I knew about Christianity, at the time, I had only became a Christian at a Vacation Bible School. Although they're not always direct, and Lewis himself repeatedly said that Narnia is not an allegory, but rather supposal. But nonetheless, the Christian elements were still there.
Now having been in children's ministry for a while, it's especially essential to teach children, because they are the future generation.
My mom and I have been attending a woman's Bible study, and we're going through a series called Exile and Return, and we were just going through Daniel. He was most likely taught at a young age, so he was prepared for when he faced challenges, like being offered the king's food and when another king made the decree that no one could worship anyone but him, Daniel continued to pray to God.
I was just thinking of how Narnia has some examples of characters being taught at a young age so they were prepared for the challenges they would face. Prince Caspian was taught about the Old Days of Narnia at a young age by his nurse and later his tutor Dr. Cornelius. So when the Telmarines tried to erase Narnia's history, he knew the truth. Even King Tirian was most likely taught at a young age, considering how when he confronted Shift when he made the claim that Aslan and Tash were one and the same, and that when he was tied up to a tree, he remembered how in Narnia's past, whenever things were at their worse, Aslan or children from another world came to help.
So as someone who's been in children's ministry (I'm sure that some of you here on the forum that are also in children's ministry would know this, too) , teaching children is important since they are the future generation. But teaching them is not just throwing facts at them—it's something deeper, something that sticks
"And this is the marvel of marvels, that he called me beloved."
(Emeth, The Last Battle)

