'Angel of God' in the Bible

And the angel of God said to him, "Take the meat and the unleavened cakes, and put them on this rock, and pour the broth over them." And he did so.

Then the woman came and told her husband, "A man of God came to me, and his countenance was like the countenance of the angel of God, very terrible; I did not ask him whence he was, and he did not tell me his name;

And God listened to the voice of Mano'ah, and the angel of God came again to the woman as she sat in the field; but Mano'ah her husband was not with her.