river] That is, Nilus: for though God speake this to Moses in the wildernesse, (as he did concerning the rod and serpent, and putting his hand into his bosome) yet this of turning the water of the river into bloud, was reserved for the land of Egypt, and not put in execution untill Moses came thither. shall be] The words (in the Hebrew phrase) are doubled, shall be and shall be, noting both earnestnesse in asseveration, and assurance of execution. become bloud] They thirsted after the bloud of little infants, drowning them in the River, and their sinne is shewed them in the same colour, and punished in that wherein they had offended: Gods judgements are not onely just and equitable, but fit and sutable to the fault of the offenders, Judges 1:7.