The effect on Saul was prompt and striking. He was touched in his tenderest feelings by the singular generosity of his opponent. He broke down thoroughly, welcomed the dear voice of David, "lifted up his voice and wept." He confessed that he was wrong, that David had rewarded him good and he had rewarded David evil. David had given him that day a convincing proof of his integrity; though it seemed that the Lord had delivered him into his hand, he killed him not. He had reversed the principle on which men were accustomed to act when they came upon an enemy, and had him in their power. And all these acknowledgments of David's superior goodness Saul made, while knowing well and frankly owning that David should be the king, and that the kingdom should be established in his hand. One favour only Saul would beg of David in reference to that coming time--that he would not massacre his family, or destroy his name out of his father's house--a request which it was easy for David to comply with. Never would he dream of such a thing, however common it was in these Eastern kingdoms. David sware to Saul, and the two parted in peace.

How glad David must have been that he acted as he did! Already his forbearance has had a full reward. It has drawn out the very best elements of Saul's soul; it has placed Saul in a light in which we can think of him with interest, and even admiration. How can this be the man that so meanly plotted for David's life when he sent him against the Philistines? that gave him his daughter to be his wife in order that he might have more opportunities to entangle him? that flung the murderous javelin at his head? that massacred the priests and destroyed their city simply because they had shown him kindness? Saul is indeed a riddle, all the more that this generous fit lasted but a very short time; and soon after, when the treacherous Ziphites undertook to betray David, Saul and his soldiers came again to the wilderness to destroy him.

The Expositor's Bible: The First Book of Samuel — Part 200

It has been thought by some, and with reason, that something more than the varying humour of Saul is necessary to account for his persistent efforts to kill David. And it is believed that a clue to this is supplied by expressions of which David made much use, and by certain references in the Psalms, which imply that to a great extent he was the victim of calumny, and of calumny of a very malignant and persistent kind. In the address on which we have commented David began by asking why Saul _listened to men's words_, saying, Behold, David seeketh thy life? And in the address recorded in the twenty-sixth chapter (ver. 19) David says very bitterly, "If they be the children of men that have stirred thee up against me, cursed be they before the Lord; for they have driven me out this day from abiding in the inheritance of the Lord, saying, Go, serve other gods." Turning to the seventh Psalm, we find in it a vehement and passionate appeal to God in connection with the bitter and murderous fury of an enemy, who is said in the superscription to have been Cush the Benjamite. The fury of that man against David was extraordinary. Deliver me, O Lord, "lest he tear my soul like a lion, rending it in pieces when there is none to deliver." It is plain that the form of calumny which this man indulged in was accusing David of "rewarding evil to him that was at peace with him," an accusation not only not true, but outrageously contrary to the truth, seeing he had "delivered him that without cause was his enemy." It is not unlikely therefore that at Saul's court David had an enemy who had the bitterest enmity to him, who never ceased to poison Saul's mind regarding him, who put facts in the most offensive light, and even after the first act of David's generosity to Saul not only continued, but continued more ferociously than ever to inflame Saul's mind, and urge him to get rid of this intolerable nuisance. What could have inspired Cush, or indeed any one, with such a hatred to David we cannot definitely say; much of it was due to that instinctive hatred of holy character which worldly men of strong will show in every age, and perhaps not a little to the apprehension that if David did ever come to the throne, many a wicked man, now fattening on the spoils of the kingdom through the favour of Saul, would be stript of his wealth and consigned to obscurity.

The Expositor's Bible: The First Book of Samuel — Part 200