When the Angel of the Lord appeared no more to Manoah and his wife, then Manoah knew that He was the Angel of the Lord.
And the Angel of the Lord said to Manoah, “Though you detain Me, I will not eat your food. But if you offer a burnt offering, you must offer it to the Lord.” (For Manoah did not know He was the Angel of the Lord.)
Now Gideon perceived that He was the Angel of the Lord. So Gideon said, “Alas, O Lord God! For I have seen the Angel of the Lord face to face.”