Discovery BoxGenesis 7:11 
Context7:11 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 1 burst open and the floodgates of the heavens 2 were opened.
Genesis 7:24
Context7:24 The waters prevailed over 3 the earth for 150 days.
1 tn The Hebrew term תְּהוֹם (tÿhom, “deep”) refers to the watery deep, the salty ocean – especially the primeval ocean that surrounds and underlies the earth (see Gen 1:2).
sn The watery deep. The same Hebrew term used to describe the watery deep in Gen 1:2 (תְּהוֹם, tihom) appears here. The text seems to picture here subterranean waters coming from under the earth and contributing to the rapid rise of water. The significance seems to be, among other things, that in this judgment God was returning the world to its earlier condition of being enveloped with water – a judgment involving the reversal of creation. On Gen 7:11 see G. F. Hasel, “The Fountains of the Great Deep,” Origins 1 (1974): 67-72; idem, “The Biblical View of the Extent of the Flood,” Origins 2 (1975): 77-95.
2 sn On the prescientific view of the sky reflected here, see L. I. J. Stadelmann, The Hebrew Conception of the World (AnBib), 46.
3 sn The Hebrew verb translated “prevailed over” suggests that the waters were stronger than the earth. The earth and everything in it were no match for the return of the chaotic deep.
