And he said, Oh let not the Lord be angry, and I will speak yet but this once: Peradventure ten shall be found there. And he said, I will not destroy it for ten's sake.
Genesis 18:32
The importance of not being in wicked cities is aptly illustrated here...an entire city that lacked 10 righteous people? And yet Jesus reminds us that "as it it was in the days of noah so shall it be in the time of the end."