Jeremiah 33:20

17 For thus says Yahweh: David shall never want a man to sit on the throne of the house of Israel;

18 neither shall the priests the Levites want a man before me to offer burnt offerings, and to burn meal-offerings, and to do sacrifice continually.

19 The word of Yahweh came to Jeremiah, saying,

20 Thus says Yahweh: If you 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;

21 then may also my covenant be broken with David my servant, that he shall not have a son to reign on his throne; and with the Levites the priests, my ministers.

22 As the host of the sky can`t be numbered, neither the sand of the sea measured; so will I multiply the seed of David my servant, and the Levites who minister to me.

23 The word of Yahweh came to Jeremiah, saying,