From the 2011 Ligonier National Conference:
Justification is the article upon which the church stands or falls, the main hinge on which religion turns. Yet as important as justification is, many Christians remain confused about it, and others actively blur its features. In this lecture, Dr. R.C. Sproul explains the basic tenets of the biblical doctrine of justification by faith alone that we might know the ground on which we stand before a holy God.