'Pairs' in the Bible

of all the clean beasts thou dost take to thee seven pairs, a male and its female; and of the beasts which are not clean two, a male and its female;

also, of fowl of the heavens seven pairs, a male and a female, to keep alive seed on the face of all the earth;

And they are pairs beneath, and together they are pairs above its head unto the one ring; so is it for them both, they are for the two corners.

and his substance is seven thousand sheep, and three thousand camels, and five hundred pairs of oxen, and five hundred she-asses, and a service very abundant; and that man is greater than any of the sons of the east.

And Jehovah hath blessed the latter end of Job more than his beginning, and he hath fourteen thousand of a flock, and six thousand camels, and a thousand pairs of oxen, and a thousand she-asses.