Lamentations 1:2 also mentions no comforter and betrayal by friends, amplifying the isolation in Lamentations 1:21.

Lamentations 1:8 explains that sin caused enemies to despise Jerusalem, giving reason for their rejoicing in Lamentations 1:21.

In Lamentations 1:16, the speaker laments having no comforter; 1:21 repeats 'there is no one to comfort me', reinforcing the same despair.

In Lamentations 1:22, the speaker asks God to repay enemies as they have suffered, directly continuing and expanding the imprecation from 1:21.

Lamentations 1:9 already mentioned 'no comforter' and enemy triumph — verse 21 intensifies the same lament and plea for justice.

In Lamentations 1:17, 'no one to comfort her' mirrors the same isolation — reinforcing the theme of abandoned Zion.

In Lamentations 4:21, Edom is told to rejoice now but will face the same cup of judgment, fulfilling the wish 'let them be as I am' from 1:21.

In Lamentations 4:22, Zion's punishment ends while Edom's begins, directly answering the prayer in 1:21 for enemies to share her fate.

In Lamentations 2:15, passersby mock and rejoice over Jerusalem's fall, echoing the enemies' gladness reported in 1:21.

In Ezekiel 25:6, Philistia's clapping and rejoicing with malice mirrors the enemies' glad attitude.

In Ezekiel 25:3, Ammon's 'Aha!' over the sanctuary and land profaned echoes the enemies' gladness here.

Revelation 18:6 calls for Babylon to be repaid double — the same principle of retributive justice as 'let them be as I am'.

In Ezekiel 25:8, Moab and Seir's mocking of Judah being like all nations parallels the enemies' gloating.

In Ezekiel 25:15, Philistia's vengeful malice against Israel parallels the enemies' gladness, showing the same hostile spirit.

In Ezekiel 26:2, Tyre's 'Aha!' over Jerusalem's broken gate directly parallels the enemies' gladness.

In Joel 3:1, God promises to gather all nations for judgment — the 'day' the speaker cries out for.

In Amos 1:1-15, God pronounces judgment on nations for their cruelty — the kind of retribution the speaker seeks.

In Obadiah 1:12, Edom is rebuked for gloating over Judah's disaster, exactly matching the enemies' gladness here.

In Obadiah 1:13, Edom's gloating and plundering in Judah's calamity parallels the enemies' attitude.

Micah 7:10 directly answers enemies' gloating: they will be shamed and trampled — the reversal Lamentations' speaker longs for.

Deuteronomy 32:41-43 promises God's vengeance on His enemies, reinforcing the plea for divine retribution here.

Jeremiah 51:24 promises repayment for all evil done in Zion, directly fulfilling the prayer that enemies be treated as she was.

In Psalm 35:15, enemies rejoice at the speaker's stumbling — the same malicious joy that Lamentations 1:21 reports.

In Psalm 37:13, the Lord's day for the wicked is coming — exactly what the speaker prays for against her enemies.

In Psalm 137:7, Edom is remembered for rejoicing at Jerusalem's fall — the same enemy gladness that 1:21 describes and calls for judgment.

Psalm 137:8 blesses those who repay Babylon, directly matching the call for enemies to suffer as she has.

In Isaiah 47:1-15, Babylon's fall is proclaimed — the kind of day the speaker calls for against her enemies.

Isaiah 51:23 says God will put the cup of wrath into Israel's tormentors' hands, exactly matching the plea for judgment.

In Jeremiah 25:17-29, God's cup of wrath is poured out on nations — exactly the judgment the speaker wants for her enemies.

In Jeremiah 48:27, Moab's derision of Israel mirrors the enemies' gladness here, showing God's judgment on those who mock His people.

In Jeremiah 50:11, Babylon's rejoicing over plundering Israel parallels the enemies' gladness, and God pronounces judgment.

Jeremiah 50:15 declares God's vengeance on Babylon, 'do to her as she has done,' directly answering the call for retribution.

Jeremiah 50:29 commands repayment to Babylon according to her deeds, echoing the call for enemies to receive what they did.

Jeremiah 50:31 pronounces judgment on the proud, 'your day has come,' which is the same day of punishment invoked here.

In Jeremiah 51:64, Babylon's permanent destruction is pronounced — the very fate the speaker wishes for her enemies.

Jeremiah 30:16 promises that devourers will be devoured — the exact reciprocal justice Lamentations' speaker prays for.

Isaiah 54:11 directly addresses the 'afflicted one, not comforted' — same condition as Lamentations — then promises glorious restoration.

Jeremiah 50:27 declares Babylon's 'day of punishment' has come — fulfilling the 'day you announced' and the wish for enemies' fate.

Isaiah 51:22 assures the cup of wrath is taken from God's people, complementing the prayer for enemies to receive it.

Micah 7:9 echoes the hope of vindication after bearing God's indignation — a hopeful counterpart to Lamentations' plea for enemies to suffer.

In Psalm 38:16, the psalmist prays enemies not rejoice over him; 1:21 states they already are glad, showing a contrast between plea and reality.

John 11:19 shows many comforters — a direct contrast to the 'no comforter' lament here.