Angels are spiritual beings created from light. They have various roles such as delivering revelations, recording human deeds, protecting humans, and blowing the horn to signal Judgment Day. The Quran and hadiths mention several angels by name, including Gabriel, Michael, the angel of death, and Munkar and Nakeer who question souls in their graves. Angels carry out Allah's commands, arranging affairs in the heavens and earth and interceding for believers on Judgment Day. Their existence underscores that people are constantly being watched and judged by higher powers.