The Protestant Reformation happened a long time ago. Did this division in the church need to happen at all? What do Protestants and Roman Catholics disagree about, and why does it still matter today? In this booklet, Dr. R.C. Sproul guides us through the five solas of the Reformation, giving essential biblical teachings about the way God saves us from sin and has authority over our lives. Recovering these truths was necessary in the sixteenth century, and we need to know them today. The Crucial Questions booklet series by Dr. R.C. Sproul offers succinct answers to important questions often asked by Christians and thoughtful inquirers.