Judges 13:19-21

So Manoah took the young goat with the grain offering and offered it on the rock to the LORD, and He performed miracles while Manoah and his wife looked on. For when the flame went up toward heaven from the altar, the Angel of the LORD ascended in the altar flame. When Manoah and his wife saw this they fell on their faces to the ground. The Angel of the LORD did not appear again to Manoah or his wife. Then Manoah knew that he was the Angel of the LORD.