Contradiction with Exodus 22:1
This verse states that a thief must repay five or four times what was stolen, whereas Proverbs 6:31 suggests repayment of sevenfold.
Exodus 22:1: If a man shall steal an ox, or a sheep, and kill it, or sell it; he shall restore five oxen for an ox, and four sheep for a sheep. [or a sheep: or, or a goat]
Contradiction with Luke 6:30
This verse advises giving to everyone who asks and not demanding back what is taken, contrasting with the repayment expectation in Proverbs 6:31.
Luke 6:30: Give to every man that asketh of thee; and of him that taketh away thy goods ask [them] not again.
Contradiction with Matthew 5:40
This verse suggests allowing someone to take more than they ask for, contrasting with seeking repayment as in Proverbs 6:31.
Matthew 5:40: And if any man will sue thee at the law, and take away thy coat, let him have [thy] cloke also.
Contradiction with Ezekiel 18:7
This verse encourages not returning what has been taken by violence and requires no repayment, which contrasts with the direction in Proverbs 6:31.
Ezekiel 18:7: And hath not oppressed any, [but] hath restored to the debtor his pledge, hath spoiled none by violence, hath given his bread to the hungry, and hath covered the naked with a garment;
Paradox #1
Proverbs 6:31 could suggest that a thief has to repay what he stole, even if he stole out of necessity, like hunger. The contradiction here could be the lack of compassion or understanding for desperate situations, where someone may steal just to survive. Instead of addressing the root cause, such as poverty, the emphasis is only on punishment and restitution.