At thy rebuke - It was not by any human means that this immense army was overthrown; it was by the power of God alone. Not only infantry was destroyed, but the cavalry also.
The chariot and horse - That is, the chariot horses, as well as the men, were
Cast into a dead sleep - Were all suffocated in the same night. On the destruction of this mighty host, the reader is requested to refer to the notes on 2 Kings 19.
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.
“In Judah is God known:
His name is great in Israel.
In Salem also is His tabernacle,
And His dwelling place in Zion.
There brake He the arrows of the bow,
The shield, and the sword, and the battle. PK 362.1
“Thou art more glorious and excellent
Than the mountains of prey.
The stouthearted are spoiled, they have slept their sleep:
And none of the men of might have found their hands.
At Thy rebuke, O God of Jacob,
Both the chariot and horse are cast into a dead sleep. PK 362.2
“Thou, even Thou, art to be feared:
And who may stand in Thy sight when once Thou art angry?
Thou didst cause judgment to be heard from heaven;
The earth feared, and was still,
When God arose to judgment,
To save all the meek of the earth. PK 362.3