"You shall take with you seven each of every clean animal, a male and his female; two each of animals that [are] unclean, a male and his female;

"also seven each of birds of the air, male and female, to keep the species alive on the face of all the earth.

Of clean animals, of animals that [are] unclean, of birds, and of everything that creeps on the earth,

two by two they went into the ark to Noah, male and female, as God had commanded Noah.