Charles Ellicott Commentary Deuteronomy 32:30

"How should one chase a thousand, And two put ten thousand to flight, Except their Rock had sold them, And Jehovah had delivered them up?" — Deuteronomy 32:30 (ASV)

How should one (of their enemies) chase a thousand (of them). — Compare the verse in Deuteronomy 28:25, and more especially Leviticus 26:8; Leviticus 26:17; Leviticus 26:36.

Had sold them. — Here first used of Jehovah. It is a common expression in the book of Judges (Deuteronomy 2:14; Deuteronomy 3:8; Deuteronomy 4:2; Deuteronomy 10:7; 1 Samuel 12:9).

Had shut them up (into the hand of their enemies) — Compare Psalms 78:62, He shut up His people also unto the sword.