Because so many Christians walk more by sense than by faith, measuring themselves by their feelings and moods rather than by the Word, their peace of mind is greatly destroyed and their joy of heart much decreased. Not a few saints are seriously the losers through misapprehensions upon this subject. Scriptural knowledge is essential if we are better to understand ourselves and diagnose more accurately our spiritual case. Many exercised souls form an erroneous opinion of themselves because of failure at this very point. Surely it is a matter of great practical moment that we should be able to judge aright of our spiritual progress or retrogression that we may not flatter ourselves on the one hand or unduly depreciate ourselves on the other.
Some are tempted in one direction, some in the other—depending partly on their personal temperament and partly on the kind of teaching they have received. Many are inclined to think more highly of themselves than they ought, and because they have obtained considerably increased intellectual knowledge of the truth imagine they have made a proportionate spiritual growth. But others with weaker memories and who acquire a mental grasp of things more slowly, suppose this to signify a lack of spirituality. Unless our thoughts about spiritual growth be formed by the Word of God we are certain to err and jump to a wrong conclusion.
A. W. Pink (1886 – 1952)