(25) And seven days were fulfilled.--These words seem to mark the duration of the first plague, which was the longer because Pharaoh made no submission at all in consequence of it. Obtaining sufficient water for his own purposes (see the comment on Exodus 7:23), he thought little of its continuance.

Verse 25. - And seven days were fulfilled. This note of time has been regarded as merely fixing the interval between the first plague and the second. But it is more natural to regard it as marking the duration of the first plague. The intervals between one plague and another are nowhere estimated.

7:14-25 Here is the first of the ten plagues, the turning of the water into blood. It was a dreadful plague. The sight of such vast rolling streams of blood could not but strike horror. Nothing is more common than water: so wisely has Providence ordered it, and so kindly, that what is so needful and serviceable to the comfort of human life, should be cheap and almost every where to be had; but now the Egyptians must either drink blood, or die for thirst. Egypt was a pleasant land, but the dead fish and blood now rendered it very unpleasant. It was a righteous plague, and justly sent upon the Egyptians; for Nile, the river of Egypt, was their idol. That creature which we idolize, God justly takes from us, or makes bitter to us. They had stained the river with the blood of the Hebrews' children, and now God made that river all blood. Never any thirsted after blood, but sooner or later they had enough of it. It was a significant plague; Egypt had great dependence upon their river, Zec 14:18; so that in smiting the river, they were warned of the destruction of all the produce of their country. The love of Christ to his disciples changes all their common mercies into spiritual blessings; the anger of God towards his enemies, renders their most valued advantages a curse and a misery to them. Aaron is to summon the plague by smiting the river with his rod. It was done in the sight of Pharaoh and his attendants, for God's true miracles were not performed as Satan's lying wonders; truth seeks no corners. See the almighty power of God. Every creature is that to us which he makes it to be water or blood. See what changes we may meet with in the things of this world; what is always vain, may soon become vexatious. See what mischievous work sin makes. If the things that have been our comforts prove our crosses, we must thank ourselves. It is sin that turns our waters into blood. The plague continued seven days; and in all that time Pharaoh's proud heart would not let him desire Moses to pray for the removal of it. Thus the hypocrites in heart heap up wrath. No wonder that God's anger is not turned away, but that his hand is stretched out still.And seven days were fulfilled,.... Or there were full seven days, a whole week:

after that the Lord had smitten the river, and turned it into blood; here the miracle is ascribed to him; Moses and Aaron, and the rod they used, were only instruments, nothing short of almighty power could do such a miracle; it seems this lasted seven days at least. It began, as Bishop Usher (o) computes it, on the eighteen day of the sixth month, or Adar, part of February and part of March, and ended the twenty fifth of the same. It is not said that Pharaoh requested to have it removed, though Philo (p) says he did; his stubborn heart not being humbled enough as yet to ask such a favour, and therefore perhaps it was taken off without asking for it, to make way for another.

(o) Annal. Vet. Test. p. 20. (p) Ut supra. (De Vita. Mosis, l. 1. p. 617.)