8 and David goeth up and his men, and they push unto the Geshurite, and the Gerizite, and the Amalekite, (for they are inhabitants of the land from of old), as thou comest in to Shur and unto the land of Egypt, 9 and David hath smitten the land, and doth not keep alive man and woman, and hath taken sheep, and oxen, and asses, and camels, and garments, and turneth back, and cometh in unto Achish. 10 And Achish saith, 'Whither have ye pushed to-day?' and David saith, 'Against the south of Judah, and against the south of the Jerahmeelite, and unto the south of the Kenite.' 11 Neither man nor woman doth David keep alive, to bring in 'word' to Gath, saying, 'Lest they declare 'it' against us, saying, Thus hath David done, and thus 'is' his custom all the days that he hath dwelt in the fields of the Philistines.' 12 And Achish believeth in David, saying, 'He hath made himself utterly abhorred among his people, in Israel, and hath been to me for a servant age-during.'
Matthew Henry's Commentary on 1 Samuel 27:8-12
Commentary on 1 Samuel 27:8-12
(Read 1 Samuel 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.