I have long been fascinated by all the apparent symbolism in the Great Pyramid.  I have long thought that the Grand Gallery represents the Church Age and it is said to be 153 feet long.  If you type "GREAT PYRAMID 153" into google, you will find all the references to 153.
By the way...there seem to be two L.Lee's...I don't want to take credit for the other person's good word...
Loretta Lee