Genesis 7:2-8

2Of 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.1 3Of fowls of the air also by sevens, the male and the female; to keep seed alive on the face of all the earth.2 4For yet seven days, and I will cause it to rain upon the earth forty days and forty nights; and every living thing that I have made will I destroy from the face of the earth.3

5And Noah did according to all that the LORD commanded him. 6And Noah was six hundred years old when the flood of waters was upon the earth. 7And Noah went in, and his sons, and his wife, and his sons’ wives with him, into the ark, because of the waters of the flood. 8Of clean beasts, and of beasts that are not clean, and of fowls, and of every thing that creepeth upon the earth,