7. therefore—for the reason given in Isa 8:6, the Assyrian flood, which is first to overflood Syria and Samaria, shall rise high enough to reach rebel Judah also (Isa 8:8).
the river—Euphrates swollen in spring by the melting of the snow of the Armenian mountains (compare Isa 8:6; Isa 7:20).
all his glory—Eastern kings travel with a gorgeous retinue.
channels—natural and artificial in the level region, Mesopotamia.