Genesis 7:1-3

American Standard Version

7 And Jehovah said unto Noah, Come thou and all thy house into the ark; for thee have I seen righteous before me in this generation. ² Of every clean beast thou shalt take to thee seven and seven, the male and his female; and of the beasts that are not clean two, the male and his female: ³ of the birds also of the heavens, seven and seven, male and female, to keep seed alive upon the face of all the earth.