And it came to pass, when Pharaoh refused to let us go, that the LORD slew all the firstborn in the land of Egypt, both the firstborn of man, and the firstborn of beast: therefore I sacrifice to the LORD all that opens the womb, being males; but all the firstborn of my children I redeem.
Read Chapter 13
George Leo Haydock
Hardened. Hebrew, "by himself "or by his own malice. (Worthington)