Shemot 10:18-20

Orthodox Jewish Bible

¹⁸ And he went out from Pharaoh, and entreated Hashem.

¹⁹ And Hashem turned a west ruach chazak me’od, which took away the arbeh, and cast them into the Yam Suf; there remained not one arbeh in all the borders of Mitzrayim.

²⁰ But Hashem hardened lev Pharaoh, so that he would not let the Bnei Yisroel go.