The Covenant of the Day and Night

"And the word of the Lord came unto Jeremiah, saying,  Thus saith the Lord; If ye can break my covenant of the day, and my covenant of the night, and that there should not be day and night in their season;  Then may also my covenant be broken with David my servant, that he should not have a son to reign upon his throne; and with the Levites the priests, my ministers."  "And the word of the Lord came unto Jeremiah, saying,  Thus saith the Lord; If ye can break my covenant of the day, and my...