This work, a doctoral thesis accepted by the University of Marburg, Germany, offers an authoritative analysis of the prayers and fasts of the oriental orthodox churches. Fr. Biji, who is the vicar of the Malankara Syrian Orthodox Church in Vienna, Austria and a visiting faculty member at the Syrian Orthodox Seminary at Vettickal, India, goes beyond the age-old spiritual practises of his church based on the teachings of its canon giver Bar Ebroyo and delineates the formative influences as well as the present day significance of those teachings. The book is a pioneering attempt to develop a theology of prayers and fasts from the oriental perspective.