Moses
Genesis 7:19BSB·traditional attribution
Finally, the waters completely prevailed upon the earth, so that all the high mountains under all the heavens were covered.
Matthew Henry Presbyterian
We are here told, I. How long the flood was increasing - forty days, Gen 7:17. The profane world, who believed not that it would come, probably when it came flattered themselves with hopes that it would soon abate and never come to extremity; but still it increased, it prevailed. Note, 1. When God judges he will overcome.
Commenting on Genesis 7:17-20
John Gill Reformed Baptist
And all flesh died that moved upon the earth,.... That had animal life in them, of which motion was a sign: both of fowl, and of cattle, and of beast, and of every creeping thing that creepeth on the earth; excepting those that were in the ark.