Contradiction with Proverbs 12:22
This verse states that lying lips are an abomination to the Lord, whereas Job 31:5 implies that living deceitfully is a serious wrongdoing Job denies having done.
Proverbs 12:22: Lying lips [are] abomination to the LORD: but they that deal truly [are] his delight.
Contradiction with Colossians 3:9
This verse advises against lying to one another, but Job 31:5 shows Job asserting his innocence in walking with falsehood.
Colossians 3:9: Lie not one to another, seeing that ye have put off the old man with his deeds;
Contradiction with Exodus 20:16
This commandment prohibits bearing false witness, which Job denies doing in Job 31:5 by claiming he has not walked with vanity.
Exodus 20:16: Thou shalt not bear false witness against thy neighbour.