Judges 13:20-22

20For it came about when the flame went up from the altar toward heaven, that the angel of the Lord ascended in the flame of the altar. When Manoah and his wife saw this, they 1fell on their faces to the ground.

21Now the angel of the Lord did not appear to Manoah or his wife again. 2Then Manoah knew that he was the angel of the Lord. 22So Manoah said to his wife, “3We will certainly die, for we have seen God.”