Psalms 78:44

And had turned their rivers into blood,.... The river Nile and its seven streams; this was the first of the plagues of Egypt, Exodus 7:20, and was a just retaliation for drowning the infants of the Israelites in their river, Exodus 1:22, a like plague will be inflicted on spiritual Egypt, and with equal justice; see

Revelation 11:8,

and their floods, that they could not drink; the rivulets that flowed from the Nile, and every spring or confluence of water; or rather by these rivers and floods are meant the canals and ditches, which, as Jarchi e observes, were made by the hands of men, from the banks of the river Nile, to water their fields with.

e Comment. on Exod. vii. 19. so Kimchi in Sepher Shorash. rad. אר.