'Night and Day' in the Bible

Constantly, night and day, he was screaming among the tombs and in the mountains, and gashing himself with stones.

and then as a widow to the age of eighty-four. She never left the temple, serving night and day with fastings and prayers.

Therefore be on the alert, remembering that night and day for a period of three years I did not cease to admonish each one with tears.

the promise to which our twelve tribes hope to attain, as they earnestly serve God night and day. And for this hope, O King, I am being accused by Jews.

For you recall, brethren, our labor and hardship, how working night and day so as not to be a burden to any of you, we proclaimed to you the gospel of God.

as we night and day keep praying most earnestly that we may see your face, and may complete what is lacking in your faith?

nor did we eat anyone’s bread without paying for it, but with labor and hardship we kept working night and day so that we would not be a burden to any of you;

Now she who is a widow indeed and who has been left alone, has fixed her hope on God and continues in entreaties and prayers night and day.

I thank God, whom I serve with a clear conscience the way my forefathers did, as I constantly remember you in my prayers night and day,