# How could one chase a thousand ... Yahweh had given them up?

Moses uses a question to scold the people for not being wise enough to understand why their enemies are defeating them. 

# How could one chase a thousand, and two put ten thousand to flight

"How could 1 enemy soldier chase 1,000 of your men, and 2 enemy soldiers cause 10,000 of your men to run away" 

# unless their Rock had sold them

"unless Yahweh, their Rock, had handed them over"