'Night and Day' in the Bible

And night and day, in the graveyard and in the mountains, he was always shouting out and cutting himself with [sharp] rocks.

and has been a widow [all these years], and is now eighty-four years old.) She has never left the Temple, but worships [God] by fasting [i.e., going without food and/or water for religious reasons] and praying night and day.

So, be very watchful, and remember that for three years I never stopped warning every one of you [about such matters] both night and day with tears [in my eyes].

This is the promise our twelve tribes [i.e., family groups], who earnestly serve God night and day, hope to see fulfilled. It is because [I advocate] this hope, O King, that I am being charged [with wrongdoing] by the Jews.

For you brothers remember how we labored and toiled, working hard night and day, so that we would not burden any of you [while] we proclaimed to you the Gospel of God.

Night and day we pray very earnestly that we will be able to see you in person, so we can provide what is lacking in your faith.

neither did we eat anyone's food without paying for it. But by hard labor and toil, we worked night and day so as not to be a burden to any of you.

Now the woman who is a true widow, and living all alone, has placed her hope in God and continues [to offer] special requests and prayers [for help ?] night and day.

I thank God, whom I worship [or, "serve"] with a clear conscience, as my forefathers did, that I can remember you [i.e., your commitment] continually in my prayers night and day.