Mike Attwood discusses the Protestant Reformation, emphasizing the pivotal role of Habakkuk 2:4, 'the just shall live by faith,' in inspiring Martin Luther and shaping the Reformation from AD 1500 to 1800. He highlights the cultural rebirth during the Renaissance, the rise of nation-states, and the corruption within the Roman Church that fueled the desire for reform. Attwood recounts the significant figures of the Reformation, including John Hus, Luther, Zwingli, and Calvin, and their struggles against both Catholicism and each other. He also addresses the subsequent challenges faced by the Reformation, including the Great Ejection and the rise of higher criticism, ultimately affirming that the proclamation of the gospel remains the true answer to societal issues. The sermon concludes with a call to stand firm in faith and truth, inspired by the historical courage of reformers.