Passage
And the word of Jehovah came unto Jeremiah, saying,
And the word of Jehovah came unto Jeremiah, saying,
Jeremiah 33:17 For thus saith Jehovah: David shall never want a man to sit upon the throne of the house of Israel;
Jeremiah 33:18 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.
Jeremiah 33:19 And the word of Jehovah came unto Jeremiah, saying,
Jeremiah 33:20 Thus saith Jehovah: If ye 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;
Jeremiah 33:21 then may also my covenant be broken with David my servant, that he shall not have a son to reign upon his throne; and with the Levites the priests, my ministers.
The verse centers on "word", "jehovah", "came", "jeremiah", and "saying". It is saying that the verse draws attention to "word" and "jehovah", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 18's "neither shall the priests the Levites want..." into verse 20's "Thus saith Jehovah If ye can break...", so "word" and "jehovah" belong inside that flow. In Jeremiah context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "word" and "jehovah" with trust shaped by these words, not by a vague optimism outside the passage.