NET

20 As the flame went up from the altar toward the sky, the angel of the Lord went up in it while Manoah and his wife watched. They fell facedown to the ground.

Darby

20 And it came to pass, as the flame went up from off the altar towards the heavens, that the Angel of Jehovah ascended in the flame of the altar; and Manoah and his wife looked on, and fell on their faces to the ground.

KJV

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.