Contradiction with Proverbs 12:22
Lying lips are an abomination to the Lord, contradicting Rahab's deception in Joshua 2:8.
Proverbs 12:22: Lying lips [are] abomination to the LORD: but they that deal truly [are] his delight.
Contradiction with Exodus 20:16
Commandment not to bear false witness, opposing Rahab's actions in Joshua 2:8.
Exodus 20:16: Thou shalt not bear false witness against thy neighbour.
Contradiction with Colossians 3:9
Instructs not to lie, conflicting with Rahab's story in Joshua 2:8.
Colossians 3:9: Lie not one to another, seeing that ye have put off the old man with his deeds;