The patron saint of the sick is Saint Michael the Archangel. Unlike the majority of saints, Saint Michael was never a living human; he is a biblical angel who appears in a vision to Daniel and leads the heavenly forces to the final victory over evil in the Book of Revelation.
Michael the Archangel is acknowledged as a saint for his assistance to people on Earth. He also serves as the patron saint of individuals who work in dangerous occupations, such as police officers and members of the military.
Michael was first recognized as a saint in the fourth century, and western Christians first celebrated a feast honoring Michael and the other archangels in the fifth century.