Jeremiah 33
17 Ref For the Lord has said, David will never be without a man to take his place on the seat of the kingdom of Israel;
18 Ref And the priests and the Levites will never be without a man to come before me, offering burned offerings and perfumes and meal offerings and offerings of beasts at all times.
19 And the word of the Lord came to Jeremiah, saying,
20 Ref The Lord has said: If it is possible for my agreement of the day and the night to be broken, so that day and night no longer come at their fixed times,
21 Ref Then my agreement with my servant David may be broken, so that he no longer has a son to take his place on the seat of the kingdom; and my agreement with the Levites, the priests, my servants.