John Knox (c. 1514–1572) was a Scottish preacher who led the Protestant Reformation in Scotland and helped found what became the Presbyterian Church of Scotland. A former Catholic priest, he survived nineteen months as a galley slave, served as a chaplain in England, and learned from John Calvin in Geneva before returning home in 1559. His bold preaching, clashes with Mary, Queen of Scots, and vision for schools and church reform changed Scotland and shaped Presbyterian churches around the world.
From Haddington to the Priesthood
Knox was born in or near Haddington, a market town east of Edinburgh. The year is uncertain; most historians place it around 1514, though some suggest as early as 1505. He studied, probably at the University of St. Andrews, and was ordained a Catholic priest. For a while he worked as a notary and a tutor to the sons of local gentry.
Scotland in those days was a small, poor, and often violent kingdom, closely allied with Catholic France and wary of Protestant England. The church owned a huge share of the nation’s wealth, and many Scots resented corrupt clergy. Reformation ideas had been seeping in through traders and students for years, and Scottish authorities had already burned a young Lutheran preacher, Patrick Hamilton, in 1528.
Wishart’s Bodyguard and a Call to Preach
In the 1540s, Knox came under the influence of George Wishart, a gifted Protestant preacher who traveled Scotland teaching the Bible. Knox became so devoted to him that he served as Wishart’s bodyguard, carrying a two-handed sword. Wishart was arrested, and on March 1, 1546, he was burned at the stake in St. Andrews on the orders of Cardinal David Beaton.
A few months later, a group of Protestant nobles murdered Beaton in revenge and seized St. Andrews Castle. Knox did not take part in the killing, but in 1547 he joined the people sheltering in the castle and began teaching there. The congregation publicly called him to become their preacher. Knox, overwhelmed, reportedly burst into tears and withdrew to his room. But he accepted, and his preaching quickly made an impression.
Nineteen Months in the Galleys
In the summer of 1547, a French fleet besieged the castle, and it surrendered. Knox and others were taken to France and forced to row on French galleys, chained to the oars. It was brutal, exhausting work, and many men died. Knox later told of being so ill that others feared for his life. Yet he never lost hope that he would preach again in Scotland. Paul described the kind of endurance Knox needed.
2 Corinthians 4:8-9 We are hard pressed on every side, but not crushed; perplexed, but not in despair; persecuted, but not abandoned; struck down, but not destroyed.
After nineteen months, Knox was released in early 1549, likely through English intervention. Those months marked him for life. They gave him a deep sense of God’s sustaining power, and they may also have hardened the fierce edge that later showed in his preaching.
Exile in England and Geneva
Knox went to England, where the young Protestant king Edward VI was on the throne. He served as a preacher in Berwick and Newcastle, near the Scottish border, and became a royal chaplain. He pushed the Church of England toward further reform and influenced the addition of the “Black Rubric” to the 1552 Book of Common Prayer, which explained that kneeling at communion didn’t mean worshiping the bread. He turned down an offer to become bishop of Rochester, partly because he believed the English church still needed deeper reform. In Berwick he met Marjorie Bowes, who later became his wife.
When the Catholic queen Mary Tudor took the throne in 1553, Knox fled to the European mainland. After a stormy period pastoring English refugees in Frankfurt, he settled in Geneva, where he pastored an English-speaking congregation from 1556 to 1559 and learned from John Calvin. There he saw a church shaped by expository preaching, congregational singing of the Psalms, and careful discipline. He wrote that Geneva was “the most perfect school of Christ that ever was in the earth since the days of the Apostles.” Members of his congregation produced the Geneva Bible, which drew heavily on the work of William Tyndale (see Lesson 6).
In 1558, Knox published The First Blast of the Trumpet Against the Monstrous Regiment of Women. Aimed at Catholic queens like Mary Tudor, it argued that rule by women was unnatural. The timing was terrible. That same year, the Protestant Elizabeth I became queen of England, and she never forgave him. Many Christians who admire Knox see the book as one of his biggest mistakes.
Reforming Scotland
Knox returned to Scotland in May 1559, as Protestant nobles known as the Lords of the Congregation were challenging the French-backed regent, Mary of Guise. On May 11, he preached a fiery sermon against idolatry at St. John’s Kirk in Perth. Afterward, crowds stripped the church and attacked local friaries. Knox didn’t order the riot, and he later regretted some of the destruction, but his preaching clearly lit the fuse. Civil war followed, and with English help the Protestant side prevailed. Through it all, Knox’s confidence rested in the gospel itself.
Romans 1:16 For I am not ashamed of the gospel, because it is the power of God that brings salvation to everyone who believes: first to the Jew, then to the Gentile.
In August 1560, the Scottish Parliament rejected the pope’s authority, outlawed the Mass, and approved the Scots Confession, which Knox helped write. Knox and his colleagues also drafted the First Book of Discipline, a bold plan that called for a school in every parish, colleges in the larger towns, and care for the poor, funded by former church wealth. Parliament never fully funded it, but its vision of education for ordinary people shaped Scotland for centuries. Knox became the minister of St. Giles in Edinburgh, the city’s main church, where crowds gathered to hear him preach.
The new Kirk, as the Scottish church was called, replaced bishops with ministers and elders who shared leadership, and it focused worship on the preaching of Scripture, the singing of Psalms, and simple celebrations of the Lord’s Supper. Over the following decades, leaders like Andrew Melville developed this into the full Presbyterian system of local sessions, regional presbyteries, and a national General Assembly.
Face to Face With a Queen
In August 1561, the young Mary, Queen of Scots, returned from France as a devout Catholic. She held private Mass at Holyrood Palace, and Knox thundered against it from the pulpit. Mary summoned him to several tense meetings, which Knox later recorded in his History of the Reformation in Scotland. Knox insisted that subjects owed their ultimate loyalty to God, not to a ruler who opposed his Word.
Acts 5:29 Peter and the other apostles replied: “We must obey God rather than human beings!”
Knox’s courage was real, but so was his harshness. He spoke to the queen in ways that brought her to tears and later called for her execution after she was deposed in 1567. Catholic historians, and many Protestants too, have criticized his intolerance and his inflammatory words. It’s fair to admire his boldness while admitting that he didn’t always speak the truth in love. Knox preached at the coronation of Mary’s infant son, James VI, in 1567.
Final Years and Legacy
Knox’s first wife, Marjorie, died around 1560. In 1564 he married Margaret Stewart, with whom he had three daughters. In his last years, weakened by a stroke, he still preached at St. Giles, though he had to be helped into the pulpit. He died in Edinburgh on November 24, 1572. Tradition says the Earl of Morton, regent of Scotland, remarked at his burial that here lay a man who never feared any flesh. His grave is believed to lie under what is now a parking lot beside St. Giles.
Proverbs 29:25 Fear of man will prove to be a snare, but whoever trusts in the Lord is kept safe.
A prayer often attributed to him, “Give me Scotland, or I die,” may not be his exact words, but it captures his passion. Knox’s work laid the foundation for the Church of Scotland and for Presbyterian churches, governed by elders rather than bishops, that spread through Scottish immigrants and missionaries to North America, Korea, Africa, and beyond. To see how Reformed churches grew into denominations, read How Did the First Denominations Begin?, and for the roots of the Reformation, revisit Lesson 1 on Peter Waldo.
The Takeaway
John Knox went from galley slave to the leading voice of Scotland’s Reformation. Shaped by suffering and trained in Geneva, he preached the gospel without fear, stood up to a queen, and championed schools and church reform that changed a nation. His harsh words remind us that courage needs love, but his fearless faith still challenges us to fear God more than people and to trust the power of the gospel.
https://www.pursuegod.org/history-makers-of-the-reformation/
