To the Glory of the Father, Son and Holy Spirit, the One God PIDALION of the spiritual ship of the One Holy Catholic and Apostolic Orthodox Church, or all the sacred and Divine Rules of the holy all-validated apostles, holy Ecumenical and Local Councils and individual divine fathers, interpreted by Hieromonk Agapius and the monk Nicodemus. “Pidalion”, translated from Greek as “helm”, is a collection of rules of the Orthodox Church with interpretations of St. Nicodemus the Holy Mountain, one of the greatest theologians and teachers of the Church. Working at the end of the 18th century on the compilation of a new canonical collection, St. Nicodemus did a lot of research and selected important and reliable material with the goal of returning Byzantine canon law to its former meaning. "Pidalion" St. Nicodemus is the fruit of a creative and unflagging love for Tradition. The Orthodox world studies the Pidalion as a source of true church teaching. The book was widely disseminated—to date, the Greek original of Pydalion has gone through 18 editions and reprints. Published in Russian for the first time.***The fourth volume includes the rules of the holy fathers, as well as a treatise on obstacles to marriage and samples of some church documents.***Recommended for publication by the Publishing Council of the Russian Orthodox Church.Consultant: Archpriest Valentin Asmus, Doctor theology.Editors: Archpriest Dimitry Pashkov, Deacon Theodore Shulga.Translation, layout, publishing house: Alexander Nevsky Novo-Tikhvin Convent.