Passage
Lo, days are coming, an affirmation of Jehovah, And I have made with the house of Israel And with the house of Judah a new covenant,
Lo, days are coming, an affirmation of Jehovah, And I have made with the house of Israel And with the house of Judah a new covenant,
Jeremiah 31:29 In those days they do not say any more: Fathers have eaten unripe fruit, And the sons' teeth are blunted.
Jeremiah 31:30 But--each for his own iniquity doth die, Every man who is eating the unripe fruit, Blunted are his teeth.
Jeremiah 31:31 Lo, days are coming, an affirmation of Jehovah, And I have made with the house of Israel And with the house of Judah a new covenant,
Jeremiah 31:32 Not like the covenant that I made with their fathers, In the day of My laying hold on their hand, To bring them out of the land of Egypt, In that they made void My covenant, And I ruled over them--an affirmation of Jehovah.
Jeremiah 31:33 For this <FI>is<Fi> the covenant that I make, With the house of Israel, after those days, An affirmation of Jehovah, I have given My law in their inward part, And on their heart I do write it, And I have been to them for God, And they are to me for a people.
The verse centers on "days", "coming", "affirmation", "jehovah", "house", "israel", and "judah". It is saying that the verse draws attention to "days" and "coming", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 30's "But--each for his own iniquity doth die..." into verse 32's "Not like the covenant that I made...", so "days" and "coming" 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 "days" and "coming" with trust shaped by these words, not by a vague optimism outside the passage.