Genesis 7:4
In seven days, I will cause it to rain on the earth for forty days and forty nights. I will destroy every living thing that I have made from the surface of the ground.”
World English Bible (Public Domain)
In context
Before · Genesis 7:2–3
2You shall take seven pairs of every clean animal with you, the male and his female. Of the animals that are not clean, take two, the male and his female. 3Also of the birds of the sky, seven and seven, male and female, to keep seed alive on the surface of all the earth.
4In seven days, I will cause it to rain on the earth for forty days and forty nights. I will destroy every living thing that I have made from the surface of the ground.”