This is the 8700th most frequent Japanese word.
明けよ
"明けよ" is the command form of "明ける," meaning "Open" or "Dawn" in English.
In this sentence, '明けよ' is used as a command for the night to end or the dawn to break.
夜が明けよ。
Let the night end and the dawn come.
Here, '明けよ' is utilized metaphorically to signify the beginning of a new phase or era.
新しい時代の幕が明けよ。
Let a new era commence.
In this context, '明けよ' expresses a wish for a hopeful morning to come.