Matthew Poole and continuators on 1 Samuel 29:9

9 And Achish answered, and said to David, I know thou art good in my sight, as an angel of God : notwithstanding the princes of the Philistines have said, He shall not go up with us to the battel.

In whom nothing is blame-worthy. Or, it may be used to express David's great wisdom; (as well as integrity) as 2 Sam. 14. 17. and 2 Sam. 19. 27. The Heathens acknowledged good Spirits, which also they worshiped as an inferior sort of Deities, who were Messengers and Ministers to the Supreme God; onely Achish had learned the title of Angels, from the Israelites his Neighbours, and especially from David's conversation.