Shemot 9:10-12

Orthodox Jewish Bible

¹⁰ And they took piach of the furnace, and stood before Pharaoh; and Moshe sprinkled it up toward Shomayim; and it became a sh’khin breaking forth with festers upon adam, and upon behemah.

¹¹ And the kharetumim could not stand before Moshe because of the sh’khin; for the sh’khin was upon the kharetumim, and upon kol Mitzrayim.

¹² And Hashem hardened the lev Pharaoh, and he paid heed not unto them; as Hashem had spoken unto Moshe.