Contradiction with Proverbs 10:19
This verse suggests that refraining from speaking too much can lead to wisdom, whereas Psalms 50:19 highlights a use of the tongue potentially for evil.
Proverbs 10:19: In the multitude of words there wanteth not sin: but he that refraineth his lips [is] wise.
Contradiction with James 1:26
This verse states that a person who considers themselves religious yet does not bridle their tongue deceives themselves, contrasting with Psalms 50:19 which discusses the negative use of speech.
James 1:26: If any man among you seem to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion [is] vain.
Contradiction with Ephesians 4:29
This verse encourages speaking what is good for edification and avoiding corrupt communication, contradicting Psalms 50:19's implication of wicked speech.
Ephesians 4:29: Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers. [to...: or, to edify profitably]
Contradiction with Proverbs 15:4
This verse refers to a wholesome tongue as a tree of life, opposed to the deceitful tongue mentioned in Psalms 50:19.
Proverbs 15:4: A wholesome tongue [is] a tree of life: but perverseness therein [is] a breach in the spirit. [A wholesome...: Heb. The healing of the tongue]
Contradiction with Proverbs 21:23
This verse indicates that keeping one's mouth and tongue can keep the soul from troubles, in contrast to the negative speech implied in Psalms 50:19.
Proverbs 21:23: Whoso keepeth his mouth and his tongue keepeth his soul from troubles.
Contradiction with Colossians 3:8
This verse instructs believers to put away filthy communication, which contradicts the implied behavior of speaking evil in Psalms 50:19.
Colossians 3:8: But now ye also put off all these; anger, wrath, malice, blasphemy, filthy communication out of your mouth.