19 The word of the Lord came to Jeremiah: 20 “This is what the Lord says: If you can break my covenant with the day and my covenant with the night so that day and night cease to come at their regular time,x 21 then also my covenant with my servant Davidy may be broken. If that could happen, then he would not have a son reigning on his throne and the Levitical priests would not be my ministers.z