And they shall come and sing in the height of Zion, and shall flow unto the goodness of Jehovah, to the grain, and to the new wine, and to the oil, and to the young of the flock and of the herd: and their soul shall be as a watered garden; and they shall not sorrow any more at all.
Jeremiah 31:10 Hear the word of Jehovah, O ye nations, and declare it in the isles afar off; and say, He that scattered Israel will gather him, and keep him, as shepherd doth his flock.
Jeremiah 31:11 For Jehovah hath ransomed Jacob, and redeemed him from the hand of him that was stronger than he.
Jeremiah 31:12 And they shall come and sing in the height of Zion, and shall flow unto the goodness of Jehovah, to the grain, and to the new wine, and to the oil, and to the young of the flock and of the herd: and their soul shall be as a watered garden; and they shall not sorrow any more at all.
Jeremiah 31:13 Then shall the virgin rejoice in the dance, and the young men and the old together; for I will turn their mourning into joy, and will comfort them, and make them rejoice from their sorrow.
Jeremiah 31:14 And I will satiate the soul of the priests with fatness, and my people shall be satisfied with my goodness, saith Jehovah.
The verse centers on "shall", "come", "sing", "height", "zion", "flow", and "goodness". It is saying that the verse draws attention to "shall" and "come", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 11's "For Jehovah hath ransomed Jacob and redeemed..." into verse 13's "Then shall the virgin rejoice in the...", so "shall" and "come" 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 "shall" and "come" with trust shaped by these words, not by a vague optimism outside the passage.