Genesis 7:1-7

Then the LORD said to Noah, “Enter the ark, you and all your household, for you alone I have seen to be righteous before Me in this time. You shall take with you of every clean animal by sevens, a male and his female; and of the animals that are not clean two, a male and his female; also of the birds of the sky, by sevens, male and female, to keep offspring alive on the face of all the earth. For after seven more days, I will send rain on the earth forty days and forty nights; and I will blot out from the face of the land every living thing that I have made.” Noah did according to all that the LORD had commanded him. Now Noah was six hundred years old when the flood of water came upon the earth. Then Noah and his sons and his wife and his sons’ wives with him entered the ark because of the water of the flood.