When souls are brought out of hindrances, when they are brought out of a false position, there is many a confession made which shows that the truth had pierced their consciences long before: only will, the world, the difficulties of family connection, a thousand snares, hinder fidelity to the Lord. But in truth, we are entirely dependent on God Himself to give force to His own truth.
Power is not in the truth simply. It is still less in a position, true as it may be. The grace of God alone gives the truth power. It is this that really works so as to deliver from hindrances, and therefore it is of such importance to our souls that the affections should be strong and rightly set.
If the affections are kept, set vigorous and pure on the object of God, then the truth is seen in its real beauty and brightness; whereas if the affections are weak or wandering after false objects, we may have all the truth in the Bible before us, but it makes little or no impression. This we see in the unconverted man fully, but the very same thing that ends in the ruin of the unconverted operates, if allowed, and in the degree it is allowed, to the hindrance and injury of those born of God.
W. Kelly (Gems From My Reading)