Contradiction with Jeremiah 17:9
This verse suggests that the heart is deceitful, which contradicts the idea in Proverbs 4:22 that words are life and health to the body.
Jeremiah 17:9: The heart [is] deceitful above all [things], and desperately wicked: who can know it?
Contradiction with Ecclesiastes 9:2-3
It implies that all things come alike to all, regardless of wisdom or wickedness, differing from Proverbs 4:22 on the guaranteed positive effects of wisdom.
Ecclesiastes 9:2-3: All [things come] alike to all: [there is] one event to the righteous, and to the wicked; to the good and to the clean, and to the unclean; to him that sacrificeth, and to him that sacrificeth not: as [is] the good, so [is] the sinner; [and] he that sweareth, as [he] that feareth an oath.
Contradiction with Job 14:1-2
This verse speaks to the fleeting and troubled nature of life, which contradicts Proverbs 4:22's assurance of life and health.
Job 14:1-2: Man [that is] born of a woman [is] of few days, and full of trouble. [few...: Heb. short of days]
Contradiction with 1 Corinthians 15:22
It states that in Adam all die, which can be seen as contradictory to the notion in Proverbs 4:22 of achieving life through adherence.
1 Corinthians 15:22: For as in Adam all die, even so in Christ shall all be made alive.
Contradiction with Isaiah 64:6
It mentions that all our righteousnesses are as filthy rags, contradicting the idea that there can be words that bring life and health, as mentioned in Proverbs 4:22.
Isaiah 64:6: But we are all as an unclean [thing], and all our righteousnesses [are] as filthy rags; and we all do fade as a leaf; and our iniquities, like the wind, have taken us away.