'Angel of God' in the Bible

And God heard the voice of the lad; and the angel of God called to Hagar out of heaven, and said unto her, What aileth thee, Hagar? fear not; for God hath heard the voice of the lad where he is.

And the angel of God spake unto me in a dream, saying, Jacob: And I said, Here am I.

Then Jacob asked Him, “Please tell me Your name.” But He said, “Why is it that you ask My name?” And He declared a blessing [of the covenant promises] on Jacob there.

And the angel of God, which went before the camp of Israel, removed and went behind them; and the pillar of the cloud went from before their face, and stood behind them:

And the angel of God said unto him, Take the flesh and the unleavened cakes, and lay them upon this rock, and pour out the broth. And he did so.

Then the woman came and told her husband, saying, A man of God came unto me, and his countenance was like the countenance of an angel of God, very terrible: but I asked him not whence he was, neither told he me his name:

And God hearkened to the voice of Manoah; and the angel of God came again unto the woman as she sat in the field: but Manoah her husband was not with her.

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.

Then thine handmaid said, The word of my lord the king shall now be comfortable: for as an angel of God, so is my lord the king to discern good and bad: therefore the LORD thy God will be with thee.

To fetch about this form of speech hath thy servant Joab done this thing: and my lord is wise, according to the wisdom of an angel of God, to know all things that are in the earth.

And he hath slandered thy servant unto my lord the king; but my lord the king is as an angel of God: do therefore what is good in thine eyes.