Bergius, Johannes a Reformed theologian, was born at Stettin 1587, and studied at Heidelberg, Strasburg, and Dantzic. In 1616 he was made professor of theology at Frankfurt-on-the-Oder. In theology he opposed Supralapsarian Calvinism, and declined to attend the Synod of Dort, whose cruel treatment of the Arminians he reprobated (see Limborch, Vita Epis. copii, p. 210). He taught "free grace" in his treatise Der Wille Gottes u. aller Menschen Seligkeit (1653). He represented Brandenburg at the Leipsic Conference (1631) and at the Thorn Colloquium (1642). He died 1658. — Herzog, Real-Encyklop. s.v.