'Night and Day' in the Bible

Night and day among the tombs and on the mountains he was always crying out, and cutting himself with stones.

and as a widow till she was eighty-four. She did not depart from the temple, but worshipped with fasting and prayer night and day.

Therefore be alert, remembering that for three years I did not cease night and day 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 remember our labor and toil, brethren; we worked night and day, that we might not be a burden to any of you, while we preached to you the gospel of God.

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

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

Now she who is a real widow, and who has been left all alone, has set her hope on God and continues in supplications 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.