- Home
- Speakers
- Martin Luther
- The Certainty Of Our Calling
Martin Luther

Martin Luther (1483–1546). Born on November 10, 1483, in Eisleben, Saxony (now Germany), to Hans and Margarethe Luther, Martin Luther grew up in a strict Catholic household, his father intent on him becoming a lawyer. After earning a bachelor’s degree in 1501 and a master’s in 1505 at the University of Erfurt, a near-fatal thunderstorm experience led him to vow to St. Anne, entering an Augustinian monastery in 1505. Ordained a priest in 1507, he grappled with spiritual turmoil over sin until finding peace in justification by faith through studying Romans. Appointed professor of theology at the University of Wittenberg in 1512, he earned a doctorate and lectured with deepening conviction. On October 31, 1517, he nailed his Ninety-Five Theses to the Wittenberg Castle Church door, condemning indulgences and igniting the Protestant Reformation. His works, like On the Freedom of a Christian (1520), challenged papal authority, spreading rapidly and emphasizing salvation by grace through faith alone. Excommunicated by Pope Leo X in 1521 and outlawed at the Diet of Worms, Luther stood firm, protected by Frederick the Wise, and hid at Wartburg Castle, translating the New Testament into German in 1522 to make Scripture accessible. Back in Wittenberg, he preached thousands of sermons, wrote hymns like “A Mighty Fortress Is Our God,” and penned The Bondage of the Will (1525), defending divine sovereignty. In 1525, he married Katharina von Bora, a former nun, raising six children in a vibrant Christian home, modeling family life. His reforms ended clerical celibacy, simplified worship, and birthed Lutheranism, though his harsh words against Jews and peasants drew criticism. Despite chronic illness, he produced catechisms, a full Bible translation by 1534, and mediated disputes until his death on February 18, 1546, in Eisleben. Luther said, “Here I stand, I can do no other, so help me God.”
Download
Topic
Sermon Summary
Martin Luther emphasizes the importance for ministers to recognize and exalt their calling as messengers of God, comparing it to an ambassador who is honored for his position, not his personal attributes. By magnifying their office, ministers can gain authority and credibility in sharing the Gospel. Paul, in his letter to the Romans, exemplifies this by taking pride in his ministry as an apostle of the Gentiles, not for self-glory but to glorify God and draw people to the message of grace and mercy.
The Certainty of Our Calling
Every minister should make much of his calling and impress upon others the fact that he has been delegated by God to preach the Gospel. As the ambassador of a government is honored for his office and not for his private person, so the minister of Christ should exalt his office in order to gain authority among men. This is not vain glory, but needful glorying. Paul takes pride in his ministry, not to his own praise but to the praise of God. Writing to the Romans, he declares, “Inasmuch as I am the apostle of the Gentiles, I magnify mine office,” i.e., I want to be received not as Paul of Tarsus, but as Paul the apostle and ambassador of Jesus Christ, in order that people might be more eager to hear. Paul exalts his ministry out of the desire to make known the name, the grace, and the mercy of God.
- Bio
- Summary
- Transcript
- Download

Martin Luther (1483–1546). Born on November 10, 1483, in Eisleben, Saxony (now Germany), to Hans and Margarethe Luther, Martin Luther grew up in a strict Catholic household, his father intent on him becoming a lawyer. After earning a bachelor’s degree in 1501 and a master’s in 1505 at the University of Erfurt, a near-fatal thunderstorm experience led him to vow to St. Anne, entering an Augustinian monastery in 1505. Ordained a priest in 1507, he grappled with spiritual turmoil over sin until finding peace in justification by faith through studying Romans. Appointed professor of theology at the University of Wittenberg in 1512, he earned a doctorate and lectured with deepening conviction. On October 31, 1517, he nailed his Ninety-Five Theses to the Wittenberg Castle Church door, condemning indulgences and igniting the Protestant Reformation. His works, like On the Freedom of a Christian (1520), challenged papal authority, spreading rapidly and emphasizing salvation by grace through faith alone. Excommunicated by Pope Leo X in 1521 and outlawed at the Diet of Worms, Luther stood firm, protected by Frederick the Wise, and hid at Wartburg Castle, translating the New Testament into German in 1522 to make Scripture accessible. Back in Wittenberg, he preached thousands of sermons, wrote hymns like “A Mighty Fortress Is Our God,” and penned The Bondage of the Will (1525), defending divine sovereignty. In 1525, he married Katharina von Bora, a former nun, raising six children in a vibrant Christian home, modeling family life. His reforms ended clerical celibacy, simplified worship, and birthed Lutheranism, though his harsh words against Jews and peasants drew criticism. Despite chronic illness, he produced catechisms, a full Bible translation by 1534, and mediated disputes until his death on February 18, 1546, in Eisleben. Luther said, “Here I stand, I can do no other, so help me God.”