神かみのみぞ知しる

expression, godan verb (-ru)

God only knows; heaven knows; it's anyone's guess

A set phrase expressing that the outcome or truth is unknown and perhaps unknowable. Often used when the speaker feels that only a higher power could know the answer. The ぞ is an old-fashioned emphatic particle, giving the phrase a slightly literary or proverbial feel.

• 試し験けんの結けっ果かは神かみのみぞ知しる。

  Only God knows the exam results.

• この謎なぞの答こたえは神かみのみぞ知しる。

  The answer to this mystery is known only to God.