The doctrine of justification by faith alone addresses this critical question: What must we do to be saved? During the Protestant Reformation, this question prompted heated theological controversy, and it remains an important question for us to study today. In this message, R.C. Sproul looks at the doctrine that Martin Luther upheld as the article by which the church stands or falls. This message is from Dr. Sproul’s 60-part teaching series Foundations: An Overview of Systematic Theology. Learn more: https://www.ligonier.org/learn/series/foundations