(15) By God.—The oath was to be by “Elohim,” not by Jehovah, of whom the Egyptian knew nothing.

And I will bring thee down.—His accurate knowledge of the route taken by the Amalekites, and his clear account of the late raid, show that he was a person of no ordinary ability; he was probably an Egyptian merchant or wealthy trader captured in some border fray.

1 Samuel 30:15. Nor deliver me into the hand of my master — It is likely his master had been cruel to him, and therefore he had no mind to serve him any longer. I will bring thee down to this company — For, it is probable, his master had told him whither they intended to go, that he might come after them as soon as he could.

30:7-15 If in all our ways, even when, as in this case, there can be no doubt they are just, we acknowledge God, we may expect that he will direct our steps, as he did those of David. David, in tenderness to his men, would by no means urge them beyond their strength. The Son of David thus considers the frames of his followers, who are not all alike strong and vigorous in their spiritual pursuits and conflicts; but, where we are weak, there he is kind; nay more, there he is strong, 2Co 12:9,10. A poor Egyptian lad, scarcely alive, is made the means of a great deal of good to David. Justly did Providence make this poor servant, who was basely used by his master, an instrument in the destruction of the Amalekites; for God hears the cry of the oppressed. Those are unworthy the name of true Israelites, who shut up their compassion from persons in distress. We should neither do an injury nor deny a kindness to any man; some time or other it may be in the power of the lowest to return a kindness or an injury.The Cherethites - Here used as synonymous with Philistines 1 Samuel 30:16. In David's reign the body-guard commanded by Benaiah consisted of Cherethites and Pelethites (Philistines?) and a picked corps of six hundred men of Gath commanded by Ittai the Gittite. It would seem from this that the Cherethites and Philistines were two kindred and associated tribes, like Angles and Saxons, who took possession of the seacoast of Palestine. The Philistines, being the more powerful, gave their name to the country and the nation in general, though that of the Cherethites was not wholly extinguished. Many persons connect the name Cherethite with that of the island of Crete. 15. Swear unto me by God—Whether there was still among these idolatrous tribes a lingering belief in one God, or this Egyptian wished to bind David by the God whom the Hebrews worshipped, the solemn sanction of an oath was mutually recognized. For his master had told him whither they intended to go, that he might come after them as soon as he could.

And David said unto him, canst thou me down to this company?.... That is, show him, or direct him where they were:

and he said, swear unto me by God; the Targum is, by the Word of the Lord; but it is highly probable this man had no notion of Jehovah, and his Word, or of the true God; only that there was a God, and that an oath taken by him was solemn, sacred, and inviolable, and might be trusted to and depended on:

that thou wilt neither kill me; for he found now he was in the hands of those whose city he had been concerned in plundering and burning, and so might fear his life was in danger:

nor deliver me into the hands of my master; who had been a cruel one to him, and therefore would gladly be clear of him; and if he had nothing else against him, his late usage of him was sufficient to raise his resentment of him:

and I will bring thee down to this company; or show him where they were, having heard them say where they would stop, and make merry, and divide their spoil; and perhaps his master might tell him they would be at such a place at such a time, where, if he was better, he might come to them; the Vulgate Latin version adds, "and David swore to him": which, though not expressed in the original text, was no doubt done by him; and the Syriac and Arabic versions begin 1 Samuel 30:16 thus, "when David had sworn to him".

And David said to him, Canst thou bring me down to this company? And he said, {g} Swear unto me by God, that thou wilt neither kill me, nor deliver me into the hands of my master, and I will bring thee down to this company.

(g) For others were in all ages held in most reverence, even among the heathen.