'Pairs' in the Bible

You are to take with you seven pairs, a male and its female, of all the clean animals, and two of the animals that are not clean, a male and its female,

and seven pairs, male and female, of the birds of the sky—in order to keep offspring alive on the face of the whole earth.

Pairs of clean animals, of unclean animals, of birds, and of everything that creeps along the ground,

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

Pairs of all creatures that have the breath of life came into the ark to Noah.