Thematic Bible: Angel attests the call to, by miracle

Then the Angel of the Lord reached out the tip of the staff that was in His hand, and touched the meat and the unleavened cakes, and there flared up fire from the rock and consumed the meat and the unleavened cakes. Then the Angel of the Lord vanished from his sight. And when Gideon perceived that He was the Angel of the Lord, Gideon said, Alas, O Lord God! For now I have seen the Angel of the Lord face to face! The Lord said to him, Peace be to you, do not fear; you shall not die. read more.
Then Gideon built an altar there to the Lord and called it, The Lord is Peace. To this day it still stands in Ophrah, which belongs to the Abiezrites.