Genesis 7:2 in the King James Version
Of every clean beast thou shalt take to thee by sevens, the male and his female: and of beasts that are not clean by two, the male and his female.
Context
1 The LORD said to Noah, “Come with all of your household into the ship, for I have seen your righteousness before me in this generation.
2 You shall take seven pairs of every clean animal with you, the male and his female. Of the animals that are not clean, take two, the male and his female.
3 Also of the birds of the sky, seven and seven, male and female, to keep seed alive on the surface of all the earth.