Create a detailed digital art representation of a pivotal scene from a religious text, specifically from Luke 2:10-12. Depict an Angel, illuminated in heavenly light, delivering a message of joy to an array of different people. Include a newborn, portrayed as a savior, wrapped in humble swaddling clothes and resting in a simple manger, to signify the birth of a divine figure. Ensure to create an authentic ambiance with a backdrop suggestive of an ancient Middle Eastern city.