Verse 44. - And had turned their rivers into blood (see Exodus 7:19, 20). "Their rivers" are the many branches of the Nile, some natural, some artificial (Herod., 2:17), by which Lower Egypt is traversed. And their floods; or, their streams; i.e. the smaller canals, which diffused the Nile water over the entire land. That they could not drink (see Exodus 7:21).

78:40-55. Let not those that receive mercy from God, be thereby made bold to sin, for the mercies they receive will hasten its punishment; yet let not those who are under Divine rebukes for sin, be discouraged from repentance. The Holy One of Israel will do what is most for his own glory, and what is most for their good. Their forgetting former favours, led them to limit God for the future. God made his own people to go forth like sheep; and guided them in the wilderness, as a shepherd his flock, with all care and tenderness. Thus the true Joshua, even Jesus, brings his church out of the wilderness; but no earthly Canaan, no worldly advantages, should make us forget that the church is in the wilderness while in this world, and that there remaineth a far more glorious rest for the people of God.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 Exodus 7.19. so Kimchi in Sepher Shorash. rad.