Contradiction with Exodus 20:13
"Thou shalt not kill" contradicts the violence and killing commanded in Numbers 31.
Exodus 20:13: Thou shalt not kill.
Contradiction with Matthew 5:44
"Love your enemies" contradicts the command to wage war found 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 James 3:17
Advocates for peace and purity, which contrasts with the conflict in Numbers 31.
James 3:17: But the wisdom that is from above is first pure, then peaceable, gentle, [and] easy to be intreated, full of mercy and good fruits, without partiality, and without hypocrisy. [partiality: or, wrangling]
Contradiction with Matthew 26:52
"All they that take the sword shall perish with the sword" contradicts the military action taken in Numbers 31.
Matthew 26:52: Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?
Contradiction with Proverbs 12:20
"Deceit is in the heart of them that imagine evil" contradicts the act of war and deception present in Numbers 31.
Proverbs 12:20: Deceit [is] in the heart of them that imagine evil: but to the counsellors of peace [is] joy.