In Zinoviy Otenskiy and the Trinitarian Controversy, Viacheslav V. Lytvynenko and Mikhail V. Shpakovskiy offer the first English edition of two major Slavic works written by the eminent Russian theologian Zinoviy Otenskiy (d. 1571/2). The selected texts represent our chief source on the Trinitarian controversy in sixteenth-century Russia and reveal Zinoviy as a man of profound theological thinking and Biblical exegesis. The authors provide a detailed and welcome overview of the history of the Trinitarian controversy and the role that Zinoviy played in it. The readers will find here a comprehensive discussion of the issues related to the history of the edited texts, Zinoviy's sources, and his doctrines of the Trinity, Christ, and salvation.