John Gill's Bible Commentary Ver. 9. And Achish answered and said unto David , etc.] In reply to the questions: I know that thou [art] good in my sight as an angel of God : for his great wisdom, and graceful behaviour, and inoffensive carriage: notwithstanding the princes of the Philistines have said, he shall not go up with us to the battle ; though Achish had so good an opinion of him, and had declared it in council, yet an order had passed there that he should not go to battle with them; there were but five of them, and Achish was one of the five, so that there were four to one for the dismissing him; and Achish, though a king, was obliged to submit.
Matthew Henry Commentary
Verses 6-11 - David scarcely ever had a greater deliverance than when dismissed from such insnaring service. God's people should always behave themselve so, as, if possible, to get the good word of all they have dealing with: and it is due to those who have acted well, to speak well of them _________________________________________________
Original Hebrew ויען6030 אכישׁ397 ויאמר559 אל413 דוד1732 ידעתי3045 כי3588 טוב2896 אתה859 בעיני5869 כמלאך4397 אלהים430 אך389 שׂרי8269 פלשׁתים6430 אמרו559 לא3808 יעלה5927 עמנו5973 במלחמה׃4421