Rabbi Levi said: They bare their sons and increased and multiplied like a great reptile, six children at each birth. In that very hour they stood on their feet, and spoke the holy language, and danced before them like sheep, as it is said, "They cast their young like sheep, and their children danced" (Job 21:11).
Noah said to them: Turn from your ways and evil deeds, so that He bring not upon you the waters of the Flood, and destroy all the seed of the children of men. They said to him: Behold, we will restrain ourselves from multiplying and increasing, so as not to produce the offspring of the children of men. What did they do? When they came to their wives they spilled the issue of their seed upon the earth so as not to produce offspring of the children of men, as it is said, "And God saw the earth, and behold it was spilled" (Gen. 6:12). They said: If He bring from heaven the waters of the Flood upon us, behold, we are of high stature, and the waters will not reach || up to our necks; and if He bring the waters of the depths against us, behold, the soles of our feet can close up all the depths. What did they do? They put forth the soles of their feet, and closed up all the depths. What did the Holy One, blessed be He, do? He heated the waters of the deep, and they arose and burnt their flesh, and peeled off their skin from them, as it is said, "What time they wax warm, they vanish; when it is hot, they are consumed out of their place" (Job 6:17). Do not read thus ("When it is hot," בחֻמו), but (read) "in his hot waters" (בחמימיו).