2 Peter 3:6

whereby the world that then was, being overflowed with water, perished The "whereby" is not without its difficulties. Does it refer to the whole fact of creation described in the previous verse, or to the two regions in which the element of water was stored up? On the whole, the latter has most in its favour. In the deluge, as described in Genesis 7:11, the "fountains of the great deep were broken up, and the windows of heaven were opened," and so the waters above and those below the firmament were both instruments in the work of judgment. The stress laid on the same fact here and in 1 Peter 3:19-20 is, as far as it goes, an evidence in favour of identity of authorship. In the use of the word "perished," or "was destroyed," we have a proof, not to be passed over, as bearing indirectly upon other questions of dogmatic importance, that the word does not carry with it the sense of utter destruction or annihilation, but rather that of a change, or breaking up, of an existing order. It is obvious that this meaning is that which gives the true answer to those who inferred from the continuity of the order of nature that there could be no catastrophic change in the future.