'Angel of God' in the Bible

And your handmaid said, The word of my lord the king shall now be comforting. For as an angel of God, so is my lord the king, to see what is good and bad. And Jehovah your God will be with you.

Your servant Joab has done this thing to change the face of the matter. And my lord is wise according to the wisdom of an angel of God, to know all that is in the land.

And he spoke slander against your servant to my lord the king. But my lord the king is as an angel of God. And do what is good in your eyes.