Jerome

And the Lord will dry up the tongue of the sea of Egypt, and he will lift his hand over the river with the strength of his spirit, and he will strike it in the seven streams, so that people can cross it in sandals. And there will be a highway for the remnant of my people who are left from Assyria, just as there was for Israel on the day when they came up from the land of Egypt. …

Commentary on Isaiah ↗

Gregory the Dialogist

It is said, as Paul witnesses: "And from sin He condemned sin." He bound his tongue with a cord, because by means of the likeness of sinful flesh He swept away all his deceitful arguments from the hearts of His Elect. For behold, when the Lord appears in the flesh, the tongue of Leviathan is bound, because, when His truth had become known, those doctrines of falsehood were silenced. …

Morals on the Book of Job, Book 33, Sections 18-19 ↗

Thomas Aquinas

381. And the Lord shall lay waste. Here the preparation of their liberation is set out. And concerning this two things are set out: first, the preparation, second, the attainment of the benefit: and there shall be a highway (Isa 11:16). And the preparation is promised according to the likeness of the twofold benefit which was shown to their fathers who came out of Egypt: first, in the parting of the sea, which we read about in Exodus 14, and as to this, he says, the tongue of the sea; and it is called the tongue of the sea because, …

Commentary on Isaiah ↗