Book excerpt: Sometimes one word is all that stands between the truth and a lie, between life and death. In the Reformation, that word was sola, "alone." At a time when leaders in the church claimed to speak for God, the Protestant Reformers reminded God's people that Scripture alone is our infallible authority. While many people sought to work their way to heaven, the Reformers boldly proclaimed the only true gospel: salvation is by God's grace alone, through faith alone, in Christ alone, to the glory of God alone. That word, "alone," made all the difference then, and the same is true today. Take up this devotional to spend ninety days with the five solas of the Reformation. These core biblical truths display the reliability of God's Word and the depths of His mercy, helping you grow in faith day by day.