Genesis 7:12 in the King James Version
And the rain was upon the earth forty days and forty nights.
Context
11 In the six hundredth year of Noah’s life, in the second month, on the seventeenth day of the month, on that day all the fountains of the great deep burst open, and the sky’s windows opened.
12 It rained on the earth forty days and forty nights.
13 In the same day Noah, and Shem, Ham, and Japheth—the sons of Noah—and Noah’s wife and the three wives of his sons with them, entered into the ship—