Judges 13:20 in the King James Version
For it came to pass, when the flame went up toward heaven from off the altar, that the angel of the LORD ascended in the flame of the altar. And Manoah and his wife looked on it, and fell on their faces to the ground.
Context
19 So Manoah took the young goat with the meal offering, and offered it on the rock to the LORD. Then the angel did an amazing thing as Manoah and his wife watched.
20 For when the flame went up toward the sky from off the altar, the LORD’s angel ascended in the flame of the altar. Manoah and his wife watched; and they fell on their faces to the ground.
21 But the LORD’s angel didn’t appear to Manoah or to his wife any more. Then Manoah knew that he was the LORD’s angel.