Contradiction with Joshua 6:3
Joshua 6:3 speaks of marching around the city for seven days, while Joshua 8:10 describes Joshua rising early to go against Ai, contrasting battle strategies.
Joshua 6:3: And ye shall compass the city, all [ye] men of war, [and] go round about the city once. Thus shalt thou do six days.
Contradiction with Judges 7:2
Judges 7:2 emphasizes having too many people for victory, whereas Joshua 8:10 implies that having enough men is necessary.
Judges 7:2: And the LORD said unto Gideon, The people that [are] with thee [are] too many for me to give the Midianites into their hands, lest Israel vaunt themselves against me, saying, Mine own hand hath saved me.
Contradiction with Matthew 5:39
Matthew 5:39 talks about turning the other cheek, opposing the proactive military action described in Joshua 8:10.
Matthew 5:39: But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.
Contradiction with Romans 12:19
Romans 12:19 advises against taking vengeance, contrasting with Joshua 8:10's preparation for battle.
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 20:22
Proverbs 20:22 advises to wait on the Lord for deliverance, whereas Joshua 8:10 describes taking immediate military action.
Proverbs 20:22: Say not thou, I will recompense evil; [but] wait on the LORD, and he shall save thee.