(27) The Philistines have invaded the land.--This, as Lange well observes, was "God's plan to save David." The Philistines had probably availed themselves of the opportunity which Saul's withdrawal of his forces southward to surround the armed band of David had given them, and were invading in force the more northern provinces.

23:19-29 In the midst of his wickedness, Saul affected to speak the language of piety. Such expressions, without suitable effects, can only amuse or deceive those who hear, and those who use them. This mountain was an emblem of the Divine Providence coming between David and the destroyer. Let us not be dismayed at the prospect of future difficulties, but stay ourselves upon Him who is wonderful in counsel and excellent in working. Sooner than his promise shall fail, he will commission Philistines to effect our escape, at the very moment when our case appears most desperate. God requires entire dependence on him, If ye will not believe, surely ye shall not be established, Isa 7:9.But there came a messenger unto Saul,.... From his court, by order of his council there; though the Jews (t) say it was an angel from heaven; but be it which it will, it was certainly the providence of God that directed this affair, that a messenger should come to Saul just at that very time that David was like to fall into his hands:

saying, haste thee, and come, for the Philistines have invaded the land; were come into it, and spread themselves in it, as the word signifies, which expresses their numbers they had poured in, the force they came with, and the possessions they had already got; perhaps they had taken the advantage of Saul's departure in quest of David, to penetrate into the tribe of Benjamin, where his patrimony, residence, and court were, and which were liable to fall into their hands; and therefore his presence was immediately required, and haste was necessary.

(t) Midrash apud Yalkut in loc.