Passage
For thus saith Jehovah: Sing aloud [with] gladness for Jacob, and shout at the head of the nations; publish ye, praise ye, and say, Jehovah, save thy people, the remnant of Israel.
For thus saith Jehovah: Sing aloud [with] gladness for Jacob, and shout at the head of the nations; publish ye, praise ye, and say, Jehovah, save thy people, the remnant of Israel.
Jeremiah 31:5 Thou shalt again plant vineyards upon the mountains of Samaria; the planters shall plant, and shall eat the fruit.
Jeremiah 31:6 For there shall be a day, when the watchmen upon mount Ephraim shall cry, Arise, and let us go up to Zion, unto Jehovah our God.
Jeremiah 31:7 For thus saith Jehovah: Sing aloud [with] gladness for Jacob, and shout at the head of the nations; publish ye, praise ye, and say, Jehovah, save thy people, the remnant of Israel.
Jeremiah 31:8 Behold, I bring them from the north country, and gather them from the uttermost parts of the earth; [and] among them the blind and the lame, the woman with child and her that travaileth with child together: a great assemblage shall they return hither.
Jeremiah 31:9 They shall come with weeping, and with supplications will I lead them; I will cause them to walk by water-brooks, in a straight way, wherein they shall not stumble; for I will be a father to Israel, and Ephraim is my firstborn.
The verse centers on "thus", "saith", "jehovah", "sing", "aloud", "gladness", "jacob", and "shout". It is saying that the verse draws attention to "thus" and "saith", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 6's "For there shall be a day when..." into verse 8's "Behold I bring them from the north...", so "thus" and "saith" 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 "saith" with trust shaped by these words, not by a vague optimism outside the passage.