Exodus 7:20-21
raised <07311> [he lifted.]
water ................... water <04325> [all the waters.]
As the Nile was held sacred by the Egyptians, as well as the animals it contained, to which they annually sacrificed a girl, or as others say, both a boy and girl, God might have designed this plague as a punishment for such idolatry and cruelty; and to shew them the baseness of those elements which they reverenced, and the insufficiency of the gods in which they trusted. All the punishments brought upon them bore a strict analogy to their crimes.
The first miracle of Christ turned water into wine, the first plague upon Egypt turned all their water into blood.
