'Night and Day' in the Bible

and your life shall hang in doubt before you; and you shall fear night and day, and shall have no assurance of your life.

that your eyes may be open toward this house night and day, even toward the place of which you have said, 'My name shall be there;' to listen to the prayer which your servant shall pray toward this place.

I, Yahweh, am its keeper. I will water it every moment. Lest anyone damage it, I will keep it night and day.

You shall say this word to them, Let my 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 wound.