also: おそかれはやかれ
A set phrase meaning that something will inevitably happen at some point in the future, though the exact timing is uncertain.
See also: 遅かれ早かれ
Sooner or later, the truth will come to light.
If you keep working hard, sooner or later you'll see results.
Reversed word order variant; same meaning, slightly less common.
A set phrase composed of the adjectives 早い (early) and 遅い (late) in the 〜かれ form, an old adverbial form meaning 'whether it be early or late'. The construction is a classical Japanese pattern that survives in modern fixed expressions.