Contradiction with Matthew 7:19
It states that every tree that does not bear good fruit is cut down and thrown into the fire, which contrasts with Proverbs 11:30's notion of a positive outcome from the fruit of righteousness.
Matthew 7:19: Every tree that bringeth not forth good fruit is hewn down, and cast into the fire.
Contradiction with Ecclesiastes 7:15
It suggests that the righteous perishing in their righteousness contradicts the idea of the righteous bearing life as suggested in Proverbs 11:30.
Ecclesiastes 7:15: All [things] have I seen in the days of my vanity: there is a just [man] that perisheth in his righteousness, and there is a wicked [man] that prolongeth [his life] in his wickedness.
Contradiction with Isaiah 57:1
It notes the righteous may perish, contrary to the life-giving fruit mentioned in Proverbs 11:30.
Isaiah 57:1: The righteous perisheth, and no man layeth [it] to heart: and merciful men [are] taken away, none considering that the righteous is taken away from the evil [to come]. [merciful...: Heb. men of kindness, or, godliness] [from...: or, from that which is evil]
Contradiction with Psalm 73:12
It depicts the wicked prospering, which opposes the idea that righteousness leads to life as in Proverbs 11:30.
Psalm 73:12: Behold, these [are] the ungodly, who prosper in the world; they increase [in] riches.
Contradiction with Job 21:7
It questions why the wicked live, grow old, and become mighty in power, conflicting with the message of Proverbs 11:30 where righteousness leads to life.
Job 21:7: Wherefore do the wicked live, become old, yea, are mighty in power?