Contradiction with Ecclesiastes 9:6
This verse suggests that emotions perish at death, while Proverbs 14:30 emphasizes the life-enhancing aspect of a calm heart.
Ecclesiastes 9:6: Also their love, and their hatred, and their envy, is now perished; neither have they any more a portion for ever in any [thing] that is done under the sun.
Contradiction with Matthew 10:34
This verse references bringing not peace but a sword, contrasting with the peaceful heart advocated in Proverbs 14:30.
Matthew 10:34: Think not that I am come to send peace on earth: I came not to send peace, but a sword.
Contradiction with James 4:5
This verse implies that the spirit within us tends toward envy, contrasting the negative impact of envy mentioned in Proverbs 14:30.
James 4:5: Do ye think that the scripture saith in vain, The spirit that dwelleth in us lusteth to envy? [to envy: or, enviously?]
Contradiction with Matthew 5:29
This verse suggests taking drastic measures against sin, contrasting with the idea of maintaining a calm heart for life in Proverbs 14:30.
Matthew 5:29: And if thy right eye offend thee, pluck it out, and cast [it] from thee: for it is profitable for thee that one of thy members should perish, and not [that] thy whole body should be cast into hell. [offend...: or, do cause thee to offend]
Contradiction with Isaiah 57:20
This verse describes the wicked as restless and turbulent, which contradicts the life-giving peace described in Proverbs 14:30.
Isaiah 57:20: But the wicked [are] like the troubled sea, when it cannot rest, whose waters cast up mire and dirt.