Contradiction with Exodus 20:13
This verse commands 'Thou shalt not kill,' contradicting slaughter during conquests in Numbers 31.
Exodus 20:13: Thou shalt not kill.
Contradiction with Matthew 5:44
This verse instructs to love your enemies, conflicting with the battle actions in Numbers 31.
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 Luke 6:31
This 'Golden Rule' to treat others as you would want to be treated contradicts waging war as in Numbers 31.
Luke 6:31: And as ye would that men should do to you, do ye also to them likewise.