It's all Greek to me

It's all Greek to me.

(informal)

something that you say when you do not understand something that is written or said

Usage notes: This phrase comes from Shakespeare's play, Julius Caesar.

I've tried reading the manual but it's all Greek to me.

Name	Pronounced	Usage
Mirza	-	Persian, Arabic, Bosnian
Cathy	['kæθi]
Helmut	HEL-moot (German)	German, Ancient Germanic
Bonds	[bɔndz]
Nathan	NAY-thən (English), na-TAWN (French)	English, French, Hebrew, Biblical, Biblical Latin, Biblical Greek
Manda	-	Croatian, Serbian