Many Christians struggle with doubts about their salvation. R.C. Sproul explains why assurance is a duty. He examines the biblical basis for assurance, the role of the Holy Spirit, and the fruits of faith to help you find rest in Christ's work.

A definitive study of the central Reformation doctrine. R.C. Sproul explains the biblical teaching of justification by faith alone (Sola Fide), analyzes the historic conflict with Rome, and shows why this truth remains essential for salvation.