Judges 13:19-21

Then Manoah took a young goat and a grain offering and offered it on a rock as a sacrifice to the LORD. And as Manoah and his wife watched, the LORD did an amazing thing. As the flames from the altar shot up toward the sky, the angel of the LORD ascended in the fire. When Manoah and his wife saw this, they fell with their faces to the ground. The angel did not appear again to Manoah and his wife. Manoah finally realized it was the angel of the LORD