And Achish said, Whither have ye made a road to day? And David said, Against the south of Judah, and against the south of the {e} Jerahmeelites, and against the south of the Kenites.

(e) A family of the tribe of Judah, 1Ch 2:9.

Wesley's Notes

27:10 David - These and the following words are ambiguous, and contrary to that simplicity which became David, both as a prince, and as an eminent professor of the true religion. The fidelity of Achish to him, and the confidence he put in him, aggravates his sin in thus deceiving him, which David seems penitently to reflect on, when he prays, Remove from me the way of lying.

King James Translators' Notes

Whither...: or, Did you not make a road, etc

Jamieson-Fausset-Brown Bible Commentary

10. Achish said, Whither have ye made a road to-day?-that is, raid, a hostile excursion for seizing cattle and other booty.

David said, Against the south of Judah, and against the south of the Jerahmeelites-Jerahmeel was the great-grandson of Judah, and his posterity occupied the southern portion of that tribal domain.

the south of the Kenites-the posterity of Jethro, who occupied the south of Judah (Jud 1:16; Nu 24:21). The deceit practised upon his royal host and the indiscriminate slaughter committed, lest any one should escape to tell the tale, exhibit an unfavorable view of this part of David's history.

Matthew Henry's Concise Commentary

27:8-12 While David was in the land of the Philistines, he attacked some remains of the devoted nations. The people whom he cut off were long before doomed to destruction. It is often wisdom to shun public notice, but we must in no situation be idle. We must always try to do somewhat in the cause of God. This expedition David hid from Achish. But an equivocation which serves the purpose of a lie, is as like to it as a hypocrite is to a profane person, it is only better in appearance, therefore more dangerous. Yet, though believers often manifest imperfections, they can never be prevailed upon to renounce the service of God, and to unite interests with his enemies, or finally to become the servants of sin and Satan. But what a train of evils follow from unbelief! When we forget the Lord's past mercies, and his gracious assurances, we shall be overwhelmed with desponding fears, and probably be led to adopt some dishonourable method to get rid of our troubles. Nothing can so effectually establish us in holy tempers and practices, and preserve us from perplexities, as firm, unshaken dependence upon the promises of God in Christ Jesus.