By the end of paragraph 6 the reader has met the two main characters Della and Jim and has sense of their relationship. How does understanding their relationship underscore the story's central idea? What is the central idea?

In the short story "The Gift of Magi," the American writer O. Henry speaks about the feeling of love and the emotions related to it. The couple Della and Jim are so much in love with each other that they would sacrifice anything for their partner to be happy. Since they are poor, they both fall short in arranging money for the Christmas gift. Della wanted to buy a platinum chain for Jim's watch, but her savings were not enough for the gift. Della decided to sell off her long hair and buy a platinum chain for Jim's watch while Jim sold off her watch to buy a beautiful comb for Della's beautiful hair. The last scene of the story reflects on their love for each other which is beyond the materialist nature of the world. Their sacrifice for each other made them the wisest people like Magi.