Kutoka 13 : 15 Exodus chapter 13 verse 15

basi ilikuwa hapo Farao alipojifanya kuwa mgumu ili asitupe ruhusa kuondoka, Bwana akawapiga wazaliwa wa kwanza wote waliokuwa katika nchi ya Misri, wa binadamu na wa mnyama; kwa ajili ya hayo namtolea Bwana wote wafunguao tumbo, wakiwa waume; lakini wazaliwa wa kwanza wote wa wana wangu nawakomboa.
soma Mlango wa 13

and it happened, when Pharaoh would hardly let us go, that Yahweh killed all the firstborn in the land of Egypt, both the firstborn of man, and the firstborn of animal. Therefore I sacrifice to Yahweh all that opens the womb, being males; but all the firstborn of my sons I redeem.'