as his rod was upon the sea - rather, understanding “stroke” from the previous clause, “according to the stroke of His rod upon the Red Sea” (Exo 14:16, Exo 14:26). His “rod” on the Assyrian (Isa 10:24, Isa 10:26) stands in bold contrast to the Assyrian used as a “rod” to strike others (Isa 10:5).
after the manner of Egypt - as He lifted it up against Egypt at the Red Sea.