Shemot 7:12-14

Orthodox Jewish Bible

¹² For they cast down every man his matteh, and they became serpents: but the matteh Aharon swallowed up their mattot.

¹³ And He hardened lev Pharaoh, that he paid heed not unto them; as Hashem had said.

¹⁴ And Hashem said unto Moshe, the lev Pharaoh is hardened, he refuseth to let the people go.