'Night and Day' in the Bible

They were a wall unto us both by night and day, all the while we were with them keeping the sheep.

That thine eyes may be open toward this house night and day, even toward the place of which thou hast said, My name shall be there: that thou mayest hearken unto the prayer which thy servant shall make toward this place.

I the LORD do keep it; I will water it every moment: lest any hurt it, I will keep it night and day.

Therefore thou shalt say this word unto them; Let mine eyes run down with tears night and day, and let them not cease: for the virgin daughter of my people is broken with a great breach, with a very grievous blow.

And should sleep, and rise night and day, and the seed should spring and grow up, he knoweth not how.

And always, night and day, he was in the mountains, and in the tombs, crying, and cutting himself with stones.

And she was a widow of about fourscore and four years, which departed not from the temple, but served God with fastings and prayers night and day.

Therefore watch, and remember, that by the space of three years I ceased not to warn every one night and day with tears.

For ye remember, brethren, our labour and travail: for labouring night and day, because we would not be chargeable unto any of you, we preached unto you the gospel of God.

Night and day praying exceedingly that we might see your face, and might perfect that which is lacking in your faith?

Neither did we eat any man's bread for nought; but wrought with labour and travail night and day, that we might not be chargeable to any of you:

Now she that is a widow indeed, and desolate, trusteth in God, and continueth in supplications and prayers night and day.

I thank God, whom I serve from my forefathers with pure conscience, that without ceasing I have remembrance of thee in my prayers night and day;