expression
who knows what will happen; there's no telling; God only knows
Expresses uncertainty about the future, often with a resigned or worried tone. Commonly used when the speaker feels they cannot predict or control the outcome.
明日の試験、どうなることやら。
Who knows how tomorrow's exam will go.
この計画、どうなることやら不安だ。
I'm worried about what will become of this plan.