One of the means God used to advance the cause of the Reformation was the insistence of the Reformers in calling Christians to exercise private judgment, or to test everything. From 1 Thessalonians 5:21 this article explains the right, duty, and necessity of private judgment. It calls Christians to the duty and necessity of upholding the truth.

The doctrine of the clarity of scripture underscores the right to private judgment. This article shows that each believer has a right to private judgment since he is responsible before God. Private judgment is essential for true worship and freedom.