Genesis 7:6-10

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. Of clean animals and animals that are not clean and birds and everything that creeps on the ground, there went into the ark to Noah by twos, male and female, as God had commanded Noah. It came about after the seven days, that the water of the flood came upon the earth.