Exodus 2:12
And he looked this way and that way, and when he saw that there was no man, he slew the Egyptian, and hid him in the sand.
Exodus 13:15
And it came to pass, when Pharaoh would hardly 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 openeth the matrix, being males; but all the firstborn of my children I redeem.