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
Emil	E-mil (Swedish), E-meel (German, Polish), e-MEEL (English)	Swedish, Norwegian, Danish, German, Romanian, Bulgarian, Czech, Polish, Slovene, Serbian, Croatian,
Rayna (2)	-	Yiddish
RÁHel	-	Hungarian
Seong-Ho	sung-ho	Korean
Barney	['bɑ:ni]
Bidelia	-	Irish