The book offers to the reader a deep and ample knowledge about the theological tradition of the Oriental Orthodox Churches in general and of the Armenian Apostolic Church in particular. Since this small family of Orthodox Churches is not very known to the public, the book provides exact, reliable and scholarly first-hand theological information which is of immense value and importance. The Family of the Oriental Orthodox Churches acknowledges only the first three Ecumenical Councils, those of Nicaea (325), Constantinople (381) and Ephesus (431), and thus maintains the pure theology of the early Church without addition or changes. The book contains theological studies which without exception were read at international Conferences or symposia and consequently and naturally are written in a spirit of tolerance and reconciliation. This ecumenical aspect is an important contribution to the rapprochement and reunion of the Churches. Tolerance and understanding of other theological positions and phrasings are remarkable throughout the book and in this sense an additional advantage in studying the theology of the Oriental Orthodox Churches.