Contradiction with Isaiah 2:4
While Jeremiah 6:4 calls for battle preparation, Isaiah 2:4 envisions a time when nations will "beat their swords into plowshares" and not learn war anymore, promoting peace rather than conflict.
Isaiah 2:4: And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more. [pruninghooks: or, scythes]
Paradox #1
The potential contradiction in Jeremiah 6:4 could involve the tension between a message of impending destruction or punishment and the overarching themes of mercy and forgiveness found elsewhere in the Bible. This reflects a conflict between justice and compassion.