Every firstborn donkey you are to redeem with a lamb, and if you do not redeem it, then you are to break its neck. But you are to redeem every firstborn male among your sons.
and when Pharaoh refused to let us go, Adonai slew all the firstborn in the land of Egypt, both men and animals. So I sacrifice to Adonai all firstborn males, but I redeem the firstborn of my sons.’