Contradiction with Genesis 9:21
This verse describes Noah, a righteous man, becoming drunk, which can be seen as a failure in abhorred behavior, contradicting the expectation of righteous conduct in Proverbs 13:5.
Genesis 9:21: And he drank of the wine, and was drunken; and he was uncovered within his tent.
Contradiction with Job 1:1
Job is described as perfect and upright, one that feared God and eschewed evil; it contrasts with Proverbs 13:5's implication that the righteous will always avoid any deceit.
Job 1:1: There was a man in the land of Uz, whose name [was] Job; and that man was perfect and upright, and one that feared God, and eschewed evil.
Contradiction with Ecclesiastes 7:20
This verse states that there is not a just man upon earth who does good and sins not, contradicting Proverbs 13:5's implication that the righteous are wholly against lies.
Ecclesiastes 7:20: For [there is] not a just man upon earth, that doeth good, and sinneth not.
Contradiction with Romans 3:23
This verse says all have sinned and come short of the glory of God, suggesting that even the righteous can falter, which contradicts Proverbs 13:5's implication of the righteous' consistent truthfulness.
Romans 3:23: For all have sinned, and come short of the glory of God;
Contradiction with 1 John 1:8
This verse asserts that if we claim to be without sin, we deceive ourselves, contradicting the notion in Proverbs 13:5 that the righteous fully abhor lies, implying they could never deceive.
1 John 1:8: If we say that we have no sin, we deceive ourselves, and the truth is not in us.