Judges 13:20
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.
Cross-reference
In Judges 6:21, the angel consumes Gideon's offering with fire and vanishes — a very similar theophanic pattern to the angel ascending in the flame here.
In Genesis 17:3, Abram also falls on his face before God, showing a common response to divine revelation.
In 1 Chronicles 21:16, David falls on his face upon seeing the angel of the Lord, a parallel reaction to divine presence.
In Ezekiel 1:28, Ezekiel falls on his face after seeing the glory of the Lord, just as Manoah and his wife do here.
In Daniel 10:9, Daniel falls on his face upon hearing a divine voice, paralleling the prostration in response to the angel.
In John 1:18, no one has seen God — yet here Manoah fears death after seeing the angel, highlighting the mystery of divine appearances.
In Genesis 17:22, God ascends after speaking with Abraham — a similar departure pattern to the angel ascending in the flame here.
In Genesis 35:13, God ascends after speaking with Jacob — another divine departure like the angel's ascent here.