'Day and Night' in the Bible

"This shalt thou say also unto them: 'Mine eyes shall weep without ceasing day and night. For my people shall be destroyed with great harm, and shall perish with a great plague.

Therefore will I cast you out of this land into a land that ye and your fathers know not: and there shall ye serve strange gods day and night, there will I show you no favour.

"Thus sayeth the LORD: May the covenant which I have made with day and night be broken, that there should not be day and night in due season?

Therefore thus sayeth the LORD: If I have made no covenant with day and night, and given no statute unto heaven and earth;