2 Samuel 14:20

But Achish answered and said to David, “I know that you are pleasing in my sight, like an angel of God; nevertheless the commanders of the Philistines have said, ‘He must not go up with us to the battle.’

“Then your servant-woman said, ‘Please let the word of my lord the king be a resting place, for as the angel of God, so is my lord the king to listen with discernment through the good and evil. And may Yahweh your God be with you.’”

“Otherwise, if I had dealt treacherously against his life (and there is nothing hidden from the king), then you yourself would have stood aloof.”

“Moreover, he has slandered your servant to my lord the king; but my lord the king is like the angel of God, therefore do what is good in your sight.