Who is this that cometh up as a flood?... — The Hebrew word for “flood” is used as a proper name almost exclusively (Daniel 12:5-6 being the only exception) for the Nile (e.g., Genesis 41:1-3; Exodus 2:3; Exodus 4:9; Amos 8:8; Amos 9:5), and thus the very form of the question points to the answer that follows. The prophet goes back, as an English poet might have done after the destruction of the Spanish Armada, to the time when all the strength of Egypt had been poured forth in the exultation of anticipated victory, as the great river of Egypt poured its waters. The word for “rivers,” though more general, has a like allusive reference, being used in Exodus 7:19; Exodus 8:5 and Ezekiel 32:2; Ezekiel 32:14 for the arms or canals of the Nile.
Related Commentaries of Jeremiah 46:7
Jeremiah 46:7-8
7 Who is this that cometh up as a flood, whose waters are moved as the rivers?
8 Egypt riseth up like a flood, and his waters are moved like the rivers; and he saith, I will go up, and will cover the earth; I will destroy the city and the inhabitants thereof.