Rotherham(i)
15 And it came to pass, when Pharaoh had shown himself too hardened to let us go, then did Yahweh slay every firstborn in the land of Egypt, from the firstborn of men, even unto the firstborn of beasts. For this cause, am, I, sacrificing to Yahweh whatsoever is born first, of the males, and, every firstborn of my sons, must I redeem.