Passage
Thou, O LORD, remainest for ever; thy throne from generation to generation.
Thou, O LORD, remainest for ever; thy throne from generation to generation.
Lamentations 5:17 For this our heart is faint; for these things our eyes are dim.
Lamentations 5:18 Because of the mountain of Zion, which is desolate, the foxes walk upon it.
Lamentations 5:19 Thou, O LORD, remainest for ever; thy throne from generation to generation.
Lamentations 5:20 Wherefore dost thou forget us for ever, and forsake us so long time?
Lamentations 5:21 Turn thou us unto thee, O LORD, and we shall be turned; renew our days as of old.
The verse centers on "thou", "lord", "remainest", "ever", "throne", and "generation". It is saying that the verse draws attention to "thou" and "lord", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 18's "Because of the mountain of Zion which..." into verse 20's "Wherefore dost thou forget us for ever...", so "thou" and "lord" 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 "thou" and "lord" with trust shaped by these words, not by a vague optimism outside the passage.