Gilbert Tennent (5 February 1703 – 23 July 1764) was a Presbyterian revivalist minister in Colonial America. Born into a Scotch-Irish family in County Armagh, Ireland, he migrated to America with his parents, studied theology, and along with Jonathan Edwards and George Whitefield, became one of the leaders of the evangelical revival known as the First Great Awakening. His most famous sermon, On the Danger of an Unconverted Ministry, also known as the "Nottingham Sermon," compared "Old Side" ministers to the biblical Pharisees of the Gospels, triggering a schism in the Presbyterian Church which lasted for 17 years. A prolific writer, Tennent would later work towards reunification of the two synods involved. Source: Wikipedia (en)