Rev John Erskine DD (1721–1803), the Scottish theologian, was born near Dunfermline at Carnock on 2 June 1721. His father was the great Scottish jurist John Erskine of Carnock and his grandfather was Colonel John Erskine of Cardross who had been in William of Orange's army when it invaded England in the Glorious Revolution of 1688.
He was born on 2 June 1721 in Fife.
He attended school in Cupar then the High School of Edinburgh followed by an M.A. at Edinburgh University. He then studied law for a time but quickly changed course for a religious career and was eventually licensed by the Presbytery of Dunblane 16 August 1743. He was ordained parish minister of Kirkintilloch, north of Glasgow, on 31 May 1744 and subsequently translated to Culross, in Fife on 21 February 1753.
On 15 June 1758 he took up position in New Greyfriars Church, Edinburgh. Then, on 9 July 1767 he was called to Old Greyfriars Church taking up position in 1768, where he became the colleague of Principal Robertson, the historian. Here he remained until his death, which took place on 19 January 1803. Erskine's writings consist chiefly of controversial pamphlets on theological subjects. His sermons were clear, vigorous expositions of a moderate Calvinism, in which metaphysical argument and practical morality are happily blended. He was very supportive of foreign missions, which he supported in the General Assembly - famously beginning a response to an opponent of such missions "Moderator, rax me (that is, hand me) that bible". His books, etc., show him to have been very prolific and to have been keenly interested in the politics of the day. He was against Roman Catholic Emancipation and on the side of the American Colonies in their dispute with King George III. (Scottish merchants had several days' advantage in crossing the Atlantic, and colonial harbours were often crowded with Glasgow ships). He received the degree of Doctor of Divinity from Glasgow University in 1766.