'Angel of God' in the Bible

The Angel of God said to him, “Take the meat and unleavened bread and lay them on this rock, and pour out the broth [over them].” And he did so.

Then the woman went and told her husband, saying, “A Man of God came to me and his appearance was like the appearance of the Angel of God, very awesome. I did not ask Him where he came from, and he did not tell me his name.

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