Contradiction with Isaiah 11:6
This verse describes peace and harmony, contrasting with Isaiah 51:20's depiction of destruction and violence.
Isaiah 11:6: The wolf also shall dwell with the lamb, and the leopard shall lie down with the kid; and the calf and the young lion and the fatling together; and a little child shall lead them.
Contradiction with Isaiah 2:4
Speaks of turning swords into plowshares and no more war, opposing the imagery of battle and desolation in Isaiah 51:20.
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]
Contradiction with Micah 4:3
Similar to Isaiah 2:4, it talks about ending wars and living in peace, which is at odds with the turmoil described in Isaiah 51:20.
Micah 4:3: And he shall judge among many people, and rebuke strong nations afar off; and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up a sword against nation, neither shall they learn war any more. [pruninghooks: or, scythes]
Contradiction with Matthew 5:9
Blessed are the peacemakers, which contradicts the scene of conflict suggested in Isaiah 51:20.
Matthew 5:9: Blessed [are] the peacemakers: for they shall be called the children of God.
Contradiction with Romans 12:18
Encourages living peacefully with all men, opposite to the scene of hostility in Isaiah 51:20.
Romans 12:18: If it be possible, as much as lieth in you, live peaceably with all men.
Contradiction with Psalm 37:11
The meek shall inherit the earth and delight in peace, opposing the turmoil in Isaiah 51:20.
Psalm 37:11: But the meek shall inherit the earth; and shall delight themselves in the abundance of peace.