AKJV(i)
17 For thus said the LORD; 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 kindle meat offerings, and to do sacrifice continually.
19 And the word of the LORD came to Jeremiah, saying,
20 Thus said the LORD; If you 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;
21 Then may also my covenant be broken with David my servant, that he should not have a son to reign on his throne; and with the Levites the priests, my ministers.