Contradiction with 1 Samuel 15:3
This verse commands the complete destruction of the Amalekites and all that they have, which contrasts with the strategic and selective ambush approach used in Joshua 8:12.
1 Samuel 15:3: Now go and smite Amalek, and utterly destroy all that they have, and spare them not; but slay both man and woman, infant and suckling, ox and sheep, camel and ass.
Contradiction with Matthew 5:44
This verse instructs to love your enemies, which contradicts the military tactics used in Joshua 8:12.
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 Exodus 20:13
This verse states "Thou shalt not kill," which is in direct opposition to the act of warfare described in Joshua 8:12.
Exodus 20:13: Thou shalt not kill.
Contradiction with Romans 12:19
This verse says to leave vengeance to God, contradicting the proactive military ambush in Joshua 8:12.
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 Proverbs 24:29
It advises against repaying evil, which contrasts with the revenge-driven battle strategy in Joshua 8:12.
Proverbs 24:29: Say not, I will do so to him as he hath done to me: I will render to the man according to his work.