Prevailing Waters Upon The Earth

Genesis 7:17-20

17  And the flood was forty days upon the earth; and the waters increased, and bare up the ark, and it was lift up above the earth. 
18  And the waters prevailed, and were increased greatly upon the earth; and the ark went upon the face of the waters. 
19  And the waters prevailed exceedingly upon the earth; and all the high hills, that were under the whole heaven, were covered. 
20  Fifteen cubits upward did the waters prevail; and the mountains were covered.