Achish said, Thou art good in my sight as an angel of God In whom nothing is blame-worthy. The heathen acknowledged good spirits, which also they worshipped as an inferior sort of deities, who were messengers and ministers to the supreme God; Achish had learned the title of angels from the Israelites his neighbours, and especially from David's conversation.
Related Commentaries of 1 Samuel 29:9
1 Samuel 29:9
9 And Achish answered and said to David, I know that 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 battle.