Interestingly enough the word 'credit' comes from the Latin root credere (to trust) and every credit crisis shows us how fragile that trust actually is. Banking, more than any other industry, is based on trust, and when that trust is lost the system starts to collapse.
The August 2007 frozen BNP Paribas funds that triggered the chain reaction resulting in the dissolution of Bear Stearns, the US government takeover of Fannie Mae and Freddie Mac and the total collapse of Lehman Brothers were perhaps a divine intervention in order to regulate the mortage-related security market. After all God's on every U.S. coin and bank note today, he must have his word to say...