expression
what; what is it
A somewhat literary or rhetorical way to ask 'what', often used in titles, philosophical questions, or to express surprise. Equivalent to 何か or 何ですか in modern casual speech.
See also: 何ぞ
人生とは何ぞや。
What is life?
この奇妙な音は何ぞや。
What is this strange sound?
expression, adverb
Rhetorical or old-fashioned way to ask 'why' or 'how'. In modern Japanese, なぜ or どうして are more common. Often carries a tone of wonder or disbelief.
See also: 何ぞ
何ぞや、このようなことが起こったのか。
Why did such a thing happen?