At thy rebuke, O God of Jacob - At thy word; thy bidding; or, when God rebuked them for their attempt to attack the city. The idea is, that they were discomfited by a word spoken by God.
Both the chariot and horse ... - The Septuagint renders this, “They who are mounted on horses.” The word rendered “chariot” here - רכב rekeb - may mean “riders, cavalry,” as well as chariot. See the notes at Isaiah 21:7. Hence, there would be less incongruity in the Hebrew than in our translation, where it is said that the “chariots” have fallen into a deep sleep. The idea may be either that horsemen and horses had fallen into a deep slumber, or that the rumbling of the chariot-wheels had ceased, and that there was a profound silence, like a deep sleep.