Contradiction with Proverbs 20:22
This verse advises against seeking personal vengeance, while Judges 20:28 involves Israel seeking God's guidance for battle, possibly implying divine vengeance.
Proverbs 20:22: Say not thou, I will recompense evil; [but] wait on the LORD, and he shall save thee.
Contradiction with Matthew 5:44
Jesus teaches to love enemies and pray for persecutors, which contrasts with the battle scenario in Judges 20:28.
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
Urges believers not to avenge themselves but leave it to God's wrath, whereas Judges 20:28 involves direct engagement in battle with divine approval.
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.