Ambrose of Milan

For a soul that is at peace quickly turns and corrects itself, even if it has sinned before, and Christ ascends to it more fully and deigns to rule it, to which it is said: "Mount your horses, your chariot of health." And elsewhere: "I have sent forth your horses to Tharsis." Behold the horses of Christ. Thus, Christ ascends his horses, the Word of God ascends to holy souls.

On Isaac and the Soul 8.66 ↗

Jerome

70: And you led your horses into the sea, disturbing the many waters. After God sent death upon the heads of the unjust, and the heads of the mighty were brought down in astonishment, and you broke them in the sea (for it is written in the Psalms: You have broken the heads of the dragons (Psalm 73:4)), with the princes slain, or broken, and the strong one overcome, they came to his house and all his possessions were plundered (Mark 13). …

Commentary on Habakkuk ↗

Bede

You sent your horses into the sea, stirring up many waters. For the sea, indeed, means the world; the horses of God, the holy preachers; the many waters, the peoples of the nations. When the horses of God were sent into the sea, the many waters were stirred up, because when the heralds of the word were scattered into the world, the hearts of the nations were disturbed, some to believe and receive the sacrament of faith, others to contradict or even persecute the heralds of this faith. …

Commentary on the Song of Habakkuk ↗