'Day and Night' in the Bible

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

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

Thus saith Jehovah: If ye 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 saith Jehovah: If my covenant of day and night'stand not, if I have not appointed the ordinances of heaven and earth;