For it happened, when the flame went up toward the sky from off the altar, that the angel of Yahweh ascended in the flame of the altar: and Manoah and his wife looked on; and they fell on their faces to the ground.
and fell on their faces to the ground; with astonishment and surprise at what they saw, through fear and reverence of the divine Being, of whose presence they were now sensible, and as worshipping of him, and praying to him.