Contradiction with Matthew 5:4
This verse offers comfort and blessing to those who mourn, whereas Jeremiah 49:3 calls for mourning as a consequence of impending judgment and loss.
Matthew 5:4: Blessed [are] they that mourn: for they shall be comforted.
Contradiction with Jeremiah 33:11
This verse discusses joy and the voice of gladness, contrasting with Jeremiah 49:3's theme of wailing and mourning.
Jeremiah 33:11: The voice of joy, and the voice of gladness, the voice of the bridegroom, and the voice of the bride, the voice of them that shall say, Praise the LORD of hosts: for the LORD [is] good; for his mercy [endureth] for ever: [and] of them that shall bring the sacrifice of praise into the house of the LORD. For I will cause to return the captivity of the land, as at the first, saith the LORD.
Contradiction with Revelation 21:4
This verse speaks of a time when there will be no more mourning, unlike Jeremiah 49:3 which speaks of mourning due to judgment.
Revelation 21:4: And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.
Contradiction with 1 Thessalonians 5:16
This verse encourages believers to rejoice always, in contrast to the lamenting called for in Jeremiah 49:3.
1 Thessalonians 5:16: Rejoice evermore.
Contradiction with Psalm 30:11
This verse refers to turning mourning into dancing, which contradicts the call for lamentation in Jeremiah 49:3.
Psalm 30:11: Thou hast turned for me my mourning into dancing: thou hast put off my sackcloth, and girded me with gladness;