The Decrees of the Ecumenical Councils is a monumental (over 2, 500 pages) two -- volume work that brings together for the first time -- in the original languages and in a fresh English translation -- all the decrees of all the ecumenical councils from Nicaea I to Vatican II. These decrees represent an authoritative distillation of Christian thought, doctrine, and tradition. In addition to the text of the decrees in English translation, a general introduction and a bibliography for each council, explanatory notes, and full indices round out this remarkable one-of-a-kind achievement.