Why have these passages been inserted in the history of the reign of David? Apparently for two chief purposes. In the first place, to give us some idea of the dangers to which he was exposed in his military life, dangers manifold and sometimes overwhelming, and all but fatal; and thus enable us to see how wonderful were the deliverances he experienced, and prepare us for entering into the song of thanksgiving which forms the twenty-second chapter, and of which these deliverances form the burden. In the second place, to enable us to understand the human instrumentality by which he achieved so brilliant a success, the kind of men by whom he was helped, the kind of spirit by which they were animated, and their intense personal devotion to David himself. The former purpose is that which is chiefly in view in the end of the twenty-first chapter, the latter in the twenty-third. The exploits themselves occur in encounters with the Philistines, and may therefore be referred partly to the time after the slaughter of Goliath, when he first distinguished himself in warfare, and the daughters of Israel began to sing, "Saul hath slain his thousands, but David his tens of thousands;" partly to the time in his early reign when he was engaged driving them out of Israel, and putting a bridle on them to restrain their inroads; and partly to a still later period. It is to be observed that nothing more is sought than to give a sample of David's military adventures, and for this purpose his wars with the Philistines alone are examined. If the like method had been taken with all his other campaigns,--against Edom, Moab, and Ammon; against the Syrians of Rehob, and Maacah, and Damascus, and the Syrians beyond the river,--we might borrow the language of the Evangelist, and say that the world itself would not have been able to contain the books that should be written.