Here is, I. The great strait that David was in, which we may suppose he himself was aware of, though we read not of his asking advice from God, nor of any project of his own to get clear of it. The two armies of the Philistines and the Israelites were encamped and ready to engage, Sa1 29:1. Achish, who had been kind to David, had obliged him to come himself and bring the forces he had into his service. David came accordingly, and, upon a review of the army, was found with Achish, in the post assigned him in the rear, Sa1 29:2. Now, 1. If, when the armies engaged, he should retire, and quit his post, he would fall under the indelible reproach, not only of cowardice and treachery, but of base ingratitude to Achish, who had been his protector and benefactor and had reposed a confidence in him, and from whom he had received a very honourable commission. Such an unprincipled thing as this he could by no means persuade himself to do. 2. If he should, as was expected from him, fight for the Philistines against Israel, he would incur the imputation of being an enemy to the Israel of God and a traitor to his country, would make his own people hate him, and unanimously oppose his coming to the crown, as unworthy the name of an Israelite, much more the honour and trust of a king of Israel, when he had fought against them under the banner of the uncircumcised. If Saul should be killed (as it proved he was) in this engagement, the fault would be laid at David's door, as if he had killed him. So that on each side there seemed to be both sin and scandal. This was the strait he was in; and a great strait it was to a good man, greater to see sin before him than to see trouble. Into this strait he brought himself by his own unadvisedness, in quitting the land of Judah, and going among the uncircumcised. It is strange if those that associate themselves with wicked people, and grow intimate with them, come off without guilt, or grief, or both. What he himself proposed to do does not appear. Perhaps he designed to act only as keeper to the king's head, the post assigned him (Sa1 28:2) and not to do any thing offensively against Israel. But it would have been very hard to come so near the brink of sin and not to fall in. Therefore, though God might justly have left him in this difficulty, to chastise him for his folly, yet, because his heart was upright with him, he would not suffer him to be tempted above what he was able, but with the temptation made a way for him to escape, Co1 10:13.

II.A door opened for his deliverance out of this strait. God inclined the hearts of the princes of the Philistines to oppose his being employed in the battle, and to insist upon his being dismissed. Thus their enmity befriended him, when no friend he had was capable of doing him such a kindness. 1. It was a proper question which they asked, upon the mustering of the forces, "What do these Hebrews here? Sa1 29:3. What confidence can we put in them, or what service can we expect from them?" A Hebrew is out of his place, and, if he has the spirit of a Hebrew, is out of his element, when he is in the camp of the Philistines, and deserves to be made uneasy there. David used to hate the congregation of evil doers, however he came now to be among them, Psa 26:5. It was an honourable testimony which Achish, on this occasion, gave to David. He looked upon him as a refugee, that fled from a wrongful prosecution in his own country, and had put himself under his protection, whom therefore he was obliged, in justice, to take care of, and thought he might in prudence employ; "for (says he) he has been with me these days, or these years," that is, a considerable time, many days at his court and a year or two in his country, and he never found any fault in him, nor saw any cause to distrust his fidelity, or to think any other than that he had heartily come over to him. By this it appears that David had conducted himself with a great deal of caution, and had prudently concealed the affection he still retained for his own people. We have need to walk in wisdom towards those that are without, to keep our mouth when the wicked is before us, and to be upon the reserve. 3. Yet the princes are peremptory in it, that he must be sent home; and they give good reasons for their insisting on it. (1.) Because he had been an old enemy to the Philistines; witness what was sung in honour of his triumphs over them: Saul slew his thousands, and David his ten thousands, Sa1 29:5. "It will be a reproach to us to harbour and trust so noted a destroyer of our people; nor can it be thought that he will now act heartily against Saul who then acted so vigorously with him and for him." Who would be fond of popular praise or applause when, even that may, another time, be turned against a man to his reproach? (2.) Because he might be a most dangerous enemy to them, and do them more mischief then all Saul's army could (Sa1 29:4): "He may in the battle be an adversary to us, and surprise us with an attack in the rear, while their army charges us in the front; and we have reason to think he will do so, that, by betraying us, he may reconcile himself to his master. Who can trust a man who, besides his affection to his country, will think it his interest to be false to us?" It is dangerous to put confidence in a reconciled enemy.

To Aphek - This was a place in the valley of Jezreel, between Mounts Tabor and Gilboa.

Pitched by a fountain - To be near a fountain, or copious spring of water, was a point of great importance to an army in countries such as these, where water was so very scarce. It is supposed, as William of Tyre says, that it was at this same fountain that Saladin pitched his camp, while Baldwin, king of Jerusalem, pitched his by another fountain between Nazareth and Sephoris; each being anxious to secure that without which it was impossible for their armies to subsist.

Now the Philistines gathered together all their armies to Aphek,.... Not the city in the tribe of Judah of that name, Jos 15:53; where the Philistines had a camp in the time of Samuel, Sa1 4:1; but rather that in the tribe of Asher, Jos 19:30; unless there was one of this name in the tribe of Issachar, not mentioned, since it seems to have been near Jezreel and Shunem, which were both in that tribe, Jos 19:18,

and the Israelites pitched by a fountain which is in Jezreel; in the valley of Jezreel; of which See Gill on Jos 19:18 and See Gill on Hos 1:5.