Genesis 7:2-4

Darby Translation

² Of all clean beasts thou shalt take to thee by sevens, a male and its female; but of the beasts that are not clean two, a male and its female.

³ Also of the fowl of the heavens by sevens, male and female; to keep seed alive on the face of all the earth.

⁴ For in yet seven days I will cause it to rain on the earth forty days and forty nights; and every living being which I have made will I destroy from the ground.