That sendeth ambassadors. These ambassadors seem to have been sent to invite Judah to join the Egyptians in an alliance against Assyria.
The sea. Here thought to refer to the Nile. Broad rivers such as the Nile and the Euphrates seem to have been referred to thus (see Isa. 19:5; Isa. 21:1; Nahum 3:8), as they are in modern Arabic. On the Nile, ships made of papyrus reeds woven and lashed together were used.
Go, ye swift messengers. The Hebrew of the remainder of v. 2 is uncertain, and many different suggestions have been made as to how it should be translated. However, Isaiah seems to be advising Ethiopia, or Egypt, that in sending ambassadors to Judah it sent them to a nation that was scattered and stricken as a result of war. The Assyrian invasions have devastated the country, overwhelming it as with a flood (see ch. 8:7, 8) and leaving it spoiled and trodden down. The Egyptians would gain nothing from the proposed alliance with Judah, nor, for that matter, would Egypt be able to help Judah.