King James Version (KJV)
And had turned their rivers into blood; and their floods, that they could not drink.
Modern English
He turned their rivers to blood, so that they could not drink of their streams.
Hebrew
וַיַּ֣הֲפֹ֣ךְ לְדָ֣ם יְאֹרֵיהֶ֑ם וְ֝נֹזְלֵיהֶ֗ם בַּל יִשְׁתָּיֽוּן׃
vayahapok ldam yʾoreyhem vnozleyhem bal yishtayvn