Passage
Therefore our heart is heauy for these things, our eyes are dimme,
Therefore our heart is heauy for these things, our eyes are dimme,
Lamentations 5:15 The ioy of our heart is gone, our daunce is turned into mourning.
Lamentations 5:16 The crowne of our head is fallen: wo nowe vnto vs, that we haue sinned.
Lamentations 5:17 Therefore our heart is heauy for these things, our eyes are dimme,
Lamentations 5:18 Because of the mountaine of Zion which is desolate: the foxes runne vpon it.
Lamentations 5:19 But thou, O Lord, remainest for euer: thy throne is from generation to generation.
The verse centers on "therefore", "heart", "heauy", "things", "eyes", and "dimme". It is saying that the verse draws attention to "therefore" and "heart", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 16's "The crowne of our head is fallen..." into verse 18's "Because of the mountaine of Zion which...", so "therefore" and "heart" belong inside that flow. In Lamentations context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "therefore" and "heart" with trust shaped by these words, not by a vague optimism outside the passage.