'Day and Night' in the Bible

Oh that my head were waters, and my eyes a spring of tears, that I might weep day and night for the slain of the daughter of my people.

therefore I will cast you forth out of this land into the land that you have not known, neither you nor your fathers; and there you shall serve other gods day and night; for I will show you no favor.'

"Thus says the LORD: 'If you can break my covenant of the day, and my covenant of the night, so that there shall not be day and night in their season;

Thus says the LORD: 'If my covenant of day and night fails, if I have not appointed the ordinances of heaven and earth;