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
Ourania	-	Greek Mythology
Khamisi	-	Eastern African, Swahili
Muhtar	-	Turkish
Rowley	['rəuli]
Faustinus	-	Ancient Roman
Atteridge	['ætəridʒ]