Génesis 7

In twos, male and female, they went into the ark with Noah, as God had said.

De dos en dos entraron á Noé en el arca: macho y hembra, como mandó Dios á Noé.

There went in two and two unto Noah into the ark, the male and the female, as God had commanded Noah.

went by pairs to Noah into the ship, male and female, as God commanded Noah.