wheel within a wheel

Something that is very complex and perhaps overly complicated. The phrase originated in the Bible. I can't figure out how to turn off this alarm system—it's really a wheel within a wheel.

Common Names:

Name	Pronounced	Usage
Blandina	-	Ancient Roman
Ehsan	-	Persian
Bain	[bein]
GÁBriel	-	Hungarian
Socrates	SAHK-rə-teez (English)	Ancient Greek (Latinized)
Melyssa	mə-LIS-ə	English (Rare)