So David and his men rose up early to depart in the morning,.... Being as willing and ready to go as the Philistines were desirous they should:to return into the land of the Philistines; for now they were in the land of Israel, at Aphek, near Jezreel, from whence they went back to Ziklag, which was within the principality of Gath; and, according to Bunting , was eighty eight miles from the place where the army of the Philistines was; but it seems not very likely that it should be so far off:and the Philistines went up to Jezreel; where the army of the Israelites lay encamped, in order to fight them.
By the dismission of David from the army of the Philistines, he was not only delivered from a sad plight he was in, either of acting an ungrateful part to Achish, or an unnatural one to Israel; but also, by the pressing charge of Achish to get away as early as possible in the morning, he came time enough to rescue the prey the Amalekites had taken at Ziklag his city, as in the following chapter; and the providence of God in this affair is further observable, as by some represented, since if David had stayed in the camp of the Philistines, it would not have been so easy for him, on the death of Saul, to have got from them, and succeed in the kingdom, as he could and did from Ziklag.
Travels, &c. p. 137.