Contradiction with Leviticus 26:6
Leviticus 26:6 promises peace and safety in the land, contradicting Joshua 23:13 which warns of snares and traps from remaining nations.
Leviticus 26:6: And I will give peace in the land, and ye shall lie down, and none shall make [you] afraid: and I will rid evil beasts out of the land, neither shall the sword go through your land. [rid: Heb. cause to cease]
Contradiction with Matthew 5:9
Matthew 5:9 blesses peacemakers, while Joshua 23:13 depicts a hostile relationship with surrounding nations.
Matthew 5:9: Blessed [are] the peacemakers: for they shall be called the children of God.
Contradiction with Romans 12:18
Romans 12:18 advocates living peaceably with all men, opposing the conflict implied in Joshua 23:13.
Romans 12:18: If it be possible, as much as lieth in you, live peaceably with all men.
Contradiction with Psalm 46:9
Psalm 46:9 promises God will end wars and break weapons, unlike the adversarial implications in Joshua 23:13.
Psalm 46:9: He maketh wars to cease unto the end of the earth; he breaketh the bow, and cutteth the spear in sunder; he burneth the chariot in the fire.
Contradiction with Isaiah 2:4
Isaiah 2:4 envisions nations turning swords into plowshares, contrasting with the ongoing enmity foreseen in Joshua 23:13.
Isaiah 2:4: And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more. [pruninghooks: or, scythes]
Contradiction with Proverbs 16:7
Proverbs 16:7 says even enemies can be at peace with you when God approves of your ways, which contrasts with the perpetual hostility in Joshua 23:13.
Proverbs 16:7: When a man's ways please the LORD, he maketh even his enemies to be at peace with him.