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
Eleftherios	-	Greek
Nadira	-	Arabic
Sigismund	-	German, Ancient Germanic
Irmgard	EERM-gahrt	German
Kir	KEER	Russian
MaŁGosia	-	Polish