Our sages tell us that you can learn of someone's true nature if you observe them in three contexts: their wallet (their business dealings), when they are angry, and when they drink. On Purim, which for non-Jerusalmites falls out on Friday (March 14), two of these factors come into play: money, where there is an extra emphasis and command to give money to the poor, and wine, which is traditionally drunk due to the centrailty of wine in the commemorated story of Queen Esther.
In place of anger, however, I have often suggested that the Jewish people have developed another method of demonstrating their true nature, which is the custom of dressing up. How this custom arose is not the goal of this post, but I nonetheless think that how someone dresses up may provide insight into their nature. I think people inherently realize this when in English they will colloquially say, "I am going to be ______ for Purim?" And of course, that's silly. People are who they are and do not become a princess, Batman, or Aaron Judge on Purim. But perhaps there's more than just a shortening of language in this formulation, when someone says they "want to be," rather than saying they "want to dress up as." Because, to some degree, the person really would like to be Queen Esther, a soldier, or a fireman - why else would they want to dress up as that person or object?
This is true dressing up - in fact we might say it's a revealing disguise, because while the disguise may make someone look like someone or something else, in fact, it reveals an aspect of who they really are.
Before tying this into Narnia, I'll just note that personally I do not dress up on Purim because I am perfectly happy being myself (not that there isn't much to criticize in that). However, this year, I will wear my math tie in honor of Pi Day.
Anyway... on to Narnia...
There is quite a bit of dressing up in Narnia and I think what we'll see is that there are good ways and bad ways to dress up. When Lucy first enters Narnia she meets the faun Tumnus who is unknowingly dressed up look "just as if he had been doing his Christmas shopping." Of course, as we've discussed elsewhere, if there was one thing Tumnus was NOT doing it was Christmas shopping. But Tumnus, perhaps still unconsciously yearned for the time that he would be able to, and I have no doubt that less than 12 months later he was in fact Christmas shopping. This "disguise" was revealing. It showed us the true nature of Tumnus' soul - he was yearning for redemption. He knew there would be redemption and he disguised himself to reveal the coming of redmeption.
Next, when the Pevensie children enter Narnia for the first time together they don fur coats leading Lucy to exclaim, "We can pretend we are Arctic explorers," and she's in some senses correct, but it is an unrevealing disguise. It does not truly demonstrate who they are or what they want. Peter responds correctly, "This is going to be exciting enough without pretending." This adventure cannot be pretend, it must be them, themselves, not disguised as somone else.
The same thing happens shortly afterwards. Peter suggests thinking of a stratagem to save Tumnus from the White Witch. He says, "I mean couldn't we dress up as something, or pretend to be - oh, pedlars or anything." These are unrevealing disguises. Peter has desire to be a pedlar. And here, Mr Beaver has the proper reply. No, you cannot pretend to be someone or something else. True hope, true redemption will not occur through you on your own no matter what you do - only through Aslan can you participate in the redemptive process, "No good your trying, of all people. But now that Aslan is on the move..." Peter, like Lucy earlier, was trying to hide. Redemption comes through truth.
Several years later, future Narnian heroes do dress up in an effort to hide their true nature. It fails miserably. Shasta, Aravis, Hwin, and Bree are attempting to get safely past Tashban on their journey to Narnia and decide that Aravis, Hwin, and Bree must disguise themselves. Bree cannot be seen as a warhorse being used as a packhorse by a grubby child and Aravis, hiding from her family, certainly cannot be noticed as a royal Takheena. They go through great pains to make unrevealing disguises, ones that would hide their true nature and destiny. And the disguised almost immediately fail. Bree is instantly recognized as a warhorse, and Aravis can't make it halfway through Tashbaan without being noticed by a (not very close) friend. Of course, this works out for the best, but it shows once again, that redemption does not come about by hiding and sneakiness, it must be quested after in truth, honesty, and determination to do what is right.
This now takes us to The Last Battle, where we have a number of characters who again disguise themselves and the disastrous results.
We will explore that in our next.