Contradiction with Matthew 5:44
Judges 5:19 mentions a battle, while Matthew 5:44 advocates loving enemies and doing good to them.
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 Romans 12:19
Judges 5:19 describes kings fighting, but Romans 12:19 advises against taking vengeance and leaving it to God.
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.
Contradiction with Hebrews 12:14
Judges 5:19 involves conflict, whereas Hebrews 12:14 encourages pursuing peace with all men.
Hebrews 12:14: Follow peace with all [men], and holiness, without which no man shall see the Lord:
Contradiction with James 4:1
Judges 5:19 depicts war, contradicting James 4:1, which questions the source of wars and fights among people, suggesting peace is preferable.
James 4:1: From whence [come] wars and fightings among you? [come they] not hence, [even] of your lusts that war in your members? [fightings: or, brawlings] [lusts: or, pleasures]
Contradiction with Isaiah 2:4
Judges 5:19 refers to a specific battle, while Isaiah 2:4 envisions a future where nations do not engage in war.
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]