31 Then the LORD opened Balaam’s eyes, and he saw the angel of the LORD standing in the road with his sword drawn. So he bowed low and fell facedown.

Read Numbers 22:31 Using Other Translations

Then the LORD opened the eyes of Balaam, and he saw the angel of the LORD standing in the way, and his sword drawn in his hand: and he bowed down his head, and fell flat on his face.
Then the LORD opened the eyes of Balaam, and he saw the angel of the LORD standing in the way, with his drawn sword in his hand. And he bowed down and fell on his face.
Then the LORD opened Balaam’s eyes, and he saw the angel of the LORD standing in the roadway with a drawn sword in his hand. Balaam bowed his head and fell face down on the ground before him.