While I don't believe the pyramids can tell about the apocalypse or the Bible, the math of the pyramids is more complex than one would think.

Most famously, the great pyramid has eight sides (not four) [1] and it has at least two massive hidden chambers that no-one can figure out [2].

Some of the Egyptian pyramids had stereograms inside, they have fantastic mazes of pathways and traps.

Building these things (like the inner angle of the great pyramid) must have been quite a feat, the logic for some of these decisions still escape us, and the style of building is not consistent from one pyramid to the next.

(I haven't verified that these sites are good, just took the first links on DDG, but the facts were widely reported and are easy to verify.)

[1]: https://curiosmos.com/were-all-3-ancient-giza-pyramids-built...

[2]: https://www.dailygrail.com/2019/11/mysterious-hidden-chamber...