Genesis 7:4; Genesis 6:13; Genesis 6:17; 2 Peter 3:6

For in seven days sI will send rain on the earth forty days and forty nights, tand every living thing1 that I have made I will blot out from the face of the ground.

13 And God said to Noah, lI have determined to make an end of all flesh,1 for the earth is filled with violence through them. Behold, I will destroy them with the earth.

17 mFor behold, I will bring a flood of waters upon the earth to destroy all flesh in which is the breath of life under heaven. Everything that is on the earth shall die.

and that by means of these the world that then existed pwas deluged with water and qperished.