(2.) son of Johann Ernst (1.), was born at Jena February 19, 1662. He studied theology at Jena and Altdorf, became a member of the Societas Disqeirentium, and contributed a number of Memoirs to the Acta Eruditorum of Leipzig. He was afterwards appointed church and school inspector of Gotha; was called to Giessen in 1696 as professor of theology, and became preacher in the same city, in 1698. He wrote some controversial works little sought after now; the most remarkable of them is entitled Der lutherischen und reformirten Religion Einigkeit. — Ersch u. Gruber, Allg. Encycl.; Fischer, Vita Gerhardi; Hoefer, Nouv. Biog. Generale, 20:213.