The author of Esther made a fascinating choice to not explicitly mention God in the story, but if you're paying attention, the threads of his divine work are all over the place. The book brilliantly features moments of “coincidences” and “happenstance” save the Jewish people from Haman’s plot to destroy them.
This story is a reminder that even when God seems absent, he does not abandon his people. He works in our lives and stays faithful to his promises even when we are living in the midst of exile.