Ralph Erskine (1685–1752) was a Scottish preacher and evangelical minister whose dynamic ministry and writings significantly shaped the 18th-century Scottish church, particularly within the Secession movement. Born on March 18, 1685, in Monilaws, Northumberland, England, he was the sixth son of Henry Erskine, a Presbyterian minister, and Margaret Halcro, both of whom were exiled Covenanters who moved to England after Henry’s ejection from ministry in 1662. Raised in a devout family, Ralph studied at the University of Edinburgh, earning an MA in 1704, and was licensed to preach by the Presbytery of Dunfermline in 1709. In 1717, he married Margaret Dewar, with whom he had ten children, though only four survived him; she died in 1739, and he remarried Margaret Simson in 1741. Erskine’s preaching career began with his ordination in 1711 as assistant minister at Dunfermline, Fife, where he served alongside his elder brother Ebenezer until 1737. Known for his fervent, gospel-centered sermons, he drew large crowds with his poetic preaching style, often delivered outdoors during Scotland’s evangelical awakenings, including the Cambuslang Revival of 1742. In 1737, he joined Ebenezer in forming the Associate Presbytery, seceding from the Church of Scotland over issues of patronage and spiritual independence, and became minister of the Queen Street congregation in Dunfermline until his death. A prolific writer, he penned over 400 sermons, published as Sermons and Other Practical Works, and composed evangelical poetry and hymns like “Faith’s Plea Upon God’s Word and Covenant.” Erskine died on November 6, 1752, in Dunfermline, leaving a legacy as a preacher whose eloquence and commitment to free grace theology invigorated Scottish Presbyterianism and influenced revivalist movements. He was buried in Dunfermline Abbey Churchyard.