This passage of Aslan lowering Eustace into a well to make him human again has strong parallels to the Christian practice of baptism, which is also a ritual of renewal and rebirth. Eustace’s shedding of his dragon skin seems to represent his ability to let go of his greed and the other unpleasant (or sinful, in keeping with the religious allegory) aspects of his personality that his dragon form represented. Edmund’s confidence that Eustace saw the real Aslan shows that Edmund has strong faith, perhaps as a result of his previous adventures in Narnia.