1 Samuel 23:12. The Lord said, They will deliver thee up — God saw the base and cowardly disposition of the inhabitants of Keilah, who, though they had been so lately delivered by David, yet would have given him up, had he stayed among them, at the first appearance of Saul’s army coming against them. “And here, methinks,” says Delaney, “is an event that will easily solve that hard question, about the consistency of the divine prescience with human free-will. A good politician, who was let into the course of Saul’s secret practices with the men of Keilah, and had fair opportunities of sifting their dispositions upon the point, might fairly pronounce upon the event; how much more, then, that all-seeing God, who searcheth the secrets of the heart, and seeth the thoughts afar off — seeth them in all their secret workings, tendencies, and temptations, and through all their mazes and masks.” To explain this a little further: the inhabitants of Keilah acted freely, just as their own hearts dictated to them; they were at liberty to behave faithfully to David, had he stayed among them, as well as to betray him. God did not, therefore, pronounce that they would deliver him up to Saul, because he had laid them under any absolute necessity of so doing; but because he saw Saul’s secret designs, on the one hand, and the secret workings of their minds, and their tendency to fear and baseness, on the other. And, therefore, when David inquired of him, he pronounced, They will deliver thee up. If any person could have known as much of their hearts as God, he might have pronounced the same concerning them. It is, however, the property of God only to see the secrets of the heart. And as this power in him extends to every man that cometh into the world, as folly as it did to the people of Keilah, we may easily conceive how God foreknows all the changes of events in this world from the beginning to the end, though he leave the human mind to act of itself freely; and only by his superintending wisdom directs all, to bring about his gracious purposes, and to educe good from evil.

23:7-13 Well might David complain of his enemies, that they rewarded him evil for good, and that for his love they were his adversaries. Christ was used thus basely. David applied to his great Protector for direction. No sooner was the ephod brought him than he made use of it. We have the Scriptures in our hands, let us take advice from them in doubtful cases. Say, Bring hither the Bible. David's address to God is very solemn, also very particular. God allows us to be so in our addresses to him; Lord, direct me in this matter, about which I am now at a loss. God knows not only what will be, but what would be, if it were not hindered; therefore he knows how to deliver the godly out of temptation, and how to render to every man according to his works.The conduct of the men of Keilah would be like that of the men of Judah to Samson their deliverer Judges 15:10-13. 9. he said to Abiathar the priest, Bring hither the ephod—The consultation was made, and the prayer uttered, by means of the priest. The alternative conditions here described have often been referred to as illustrating the doctrine of God's foreknowledge and preordination of events. To wit, if thou abidest there; for God saw their hearts, their purposes and passions, their aversion from David, and their affections to Saul, and knew better than themselves what they would do in that case.

Then said David, will the men of Keilah deliver me and my men into the hand of Saul?.... That is, the lords and great men of the place, the governor of the city, and the heads of it, the chief magistrates in it:

and the Lord said, they will deliver thee up: that is, provided he stayed there; for the Lord knew the dispositions and affections of their minds, that they were inclined to do it, and would do it, if he continues among them till Saul came down; which showed the great ingratitude of this people to their deliverer.

Then said David, Will the men of Keilah deliver me and my men into the hand of Saul? And the LORD said, They will deliver thee up.