Adversity had taught David self-restraint, had braced his soul, had driven him to grasp firmly the hand of God. And prosperity had seemed for nearly twenty years but to perfect the lessons. Gratitude had followed deliverance, and the sunshine after the rain had brought out the fragrance of devotion and the blossoms of glad songs. A good man, and still more a man of David's age at the date of his great crime, seldom falls so low, unless there has been previous, perhaps unconscious, relaxation of the girded loins, and negligence of the untrimmed lamp. The sensitive nature of the psalmist was indeed not unlikely to yield to the sudden force of such a temptation as conquered him, but we can scarcely conceive of its having done so without a previous decay of his religious life, hidden most likely from himself. And the source of that decay may probably be found in self-indulgence, fostered by ease, and by long years of command. The actual fall into sin seems to have been begun by slothful abdication of his functions as captain of Israel. It is perhaps not without bitter emphasis that the narrative introduces it by telling us that, "at the time when kings go forth to battle," David contented himself with sending his troops against Ammon, and "tarried still at Jerusalem." At all events, the story brings into sharp contrast the levy _en masse_, encamped round Rabbath, and their natural head, who had once been so ready to take his share of blows and privations, loitering behind, taking his quiet siesta in the hot hours after noon, as if there had been no soldiers of his sweltering in their armour, and rising from his bed to stroll on his palace roof, and peer into the household privacies below, as if his heart had no interest in the grim tussle going on behind the hills that he could almost see from his height, as they grew purple in the evening twilight. He has fallen to the level of an Eastern despot, and has lost his sense of the responsibilities of his office. Such loosening of the tension of his moral nature as is indicated in his absence from the field, during what was evidently a very severe as well as a long struggle, prepared the way for the dismal headlong plunge into sin.