Exodus 7:22-25

22And the scribes of EgyptH4714 did soH3651 with their sorceries; and Pharaoh's heartH3820 was stubborn, neither did he hearken to them, as Jehovah had saidH1696. 23And PharaohH6547 turnedH6437 and wentH935 into his houseH1004, and took not this to heartH3820 either. 24And all the EgyptiansH4713 dug roundH5439 about the riverH2975 for waterH4325 to drinkH8354; for they could not drinkH8354 of the waterH4325 of the riverH2975. 25And sevenH7651 daysH3117 were fulfilled, after Jehovah had smitten the riverH2975.