Psalms 119:120

120.My flesh hath trembled for fear of thee. (441) At first sight the prophet seems to contradict himself. He had just now said, that, by God’s severity, he was gently drawn to love his testimonies; now he declares, that he was seized with terror. But although these two effects differ widely from each other, yet, if we consider by what kind of discipline God forms us to reverence his law, we will perceive that they entirely harmonize. We require to be subdued by fear that we may desire and seek after the favor of God. Since fear, then, is the beginning of love, the prophet testifies, that he was awakened by a heart-felt fear of God to look well to himself. Nor is the mortification of the flesh so easy a matter, as that every one should consent to enter upon it, without the constraint of violent means; and, therefore, it is not wonderful if God struck his servant with terror, that, in this way, he might bend his mind to a holy fear of him. It is an evidence of no common wisdom to tremble before God when he executes his judgments, of which the majority of mankind take no notice. We are then taught by these words of the prophet, that we ought to consider attentively the judgments of God, that they may not only gently instruct us, but that they may also strike us with such terror as will lead us to true repentance.