John Gills Exposition of the Bible Commentary - Genesis 7:19
And the waters prevailed exceedingly on the earth ,.... Yet more and more, so that the people without the ark were obliged to remove, not only from the lower to the higher rooms in their houses, and to the tops of them, but to the highest trees; and when these were bore down, to the highest hills and mountains; and to those it was in vain to fly, by what follows: and all the high hills that were under the whole heaven were covered : whence it appears there were hills before the flood,... read more
Matthew Henry's Complete Commentary - Genesis 7:17-20
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. If he begin, he will make an end; his way is perfect, both in judgment and mercy. 2. The gradual approaches and advances of God's judgments, which are designed to bring... read more