Judges 13:21 in the King James Version
But the angel of the LORD did no more appear to Manoah and to his wife. Then Manoah knew that he was an angel of the LORD.
Context
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.
22 Manoah said to his wife, “We shall surely die, because we have seen God.”