Passage
“Thus says Yahweh of hosts, the God of Israel, ‘Because you have sent letters in your own name to all the people who are in Jerusalem and to Zephaniah the son of Maaseiah, the priest, and to all the priests, saying,
“Thus says Yahweh of hosts, the God of Israel, ‘Because you have sent letters in your own name to all the people who are in Jerusalem and to Zephaniah the son of Maaseiah, the priest, and to all the priests, saying,
Jeremiah 29:23 because they have acted with wicked foolishness in Israel and have committed adultery with their neighbors’ wives and have spoken words in My name falsely, which I did not command them; and I am He who knows and am a witness,” declares Yahweh.’”
Jeremiah 29:24 And to Shemaiah the Nehelamite you shall speak, saying,
Jeremiah 29:25 “Thus says Yahweh of hosts, the God of Israel, ‘Because you have sent letters in your own name to all the people who are in Jerusalem and to Zephaniah the son of Maaseiah, the priest, and to all the priests, saying,
Jeremiah 29:26 “Yahweh has given you to be a priest instead of Jehoiada the priest, to be the overseer in the house of Yahweh over every madman who prophesies, to put him in the stocks and in the iron collar,
Jeremiah 29:27 so now, why have you not rebuked Jeremiah of Anathoth who prophesies to you?
The verse centers on "thus", "says", "yahweh", "hosts", "israel", "sent", "letters", and "name". It is saying that the verse draws attention to "thus" and "says", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 24's "And to Shemaiah the Nehelamite you shall..." into verse 26's "Yahweh has given you to be a...", so "thus" and "says" 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 "thus" and "says" with trust shaped by these words, not by a vague optimism outside the passage.