Contradiction with Isaiah 2:4
Contradicts by speaking of peace among nations, whereas Ezekiel 39:16 is about conflict and cleansing the land.
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 Matthew 5:44
Contradicts by promoting love and prayer for enemies, in contrast to the judgment against Gog and its aftermath in Ezekiel 39:16.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Micah 4:3
Contradicts by prophesying the conversion of weapons into farming tools, while Ezekiel 39:16 depicts a war aftermath with continued hostilities.
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 Romans 12:19
Contradicts with the teaching against taking vengeance, while Ezekiel 39:16 involves a divine act of vengeance.
Romans 12:19: Dearly beloved, avenge not yourselves, but [rather] give place unto wrath: for it is written, Vengeance [is] mine; I will repay, saith the Lord.