The Great Pyramid, as a stone witness (mentioned in Isa 19:19-20 and Jer 32:30), corroborates God's Divine Plan. For a discourse on the subject, see:
http://www.heraldmag.org/olb/Treatises/edgar%20gp%201906%20discourse.htm
For considerable detail about the Biblical significance of the Great Pyramid, as well as its scientific features, see the following two volumes written by John and Morton Edgar:
http://www.heraldmag.org/olb/Treatises/edgar%20gpp1.htm
http://www.heraldmag.org/olb/Treatises/edgar%20gpp2.htm
A brief overview can be found at:
http://www.biblestudents.net/studies/pyramid/bibleinstone.htm
(Yes, first post, been lurking for a while and finally had something worth sharing)