Contradiction with Proverbs 10:11
Psalms 36:3 speaks of iniquity, whereas Proverbs 10:11 describes the mouth of a righteous person as a source of life.
Proverbs 10:11: The mouth of a righteous [man is] a well of life: but violence covereth the mouth of the wicked.
Contradiction with James 3:10
While Psalms 36:3 speaks of deceit, James 3:10 mentions that blessing and cursing should not come from the same mouth, advocating for purity in speech.
James 3:10: Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be.
Contradiction with Proverbs 15:4
Psalms 36:3 mentions deceit, but Proverbs 15:4 talks about a wholesome tongue as a tree of life, presenting a contrast between harmful and beneficial speech.
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 Ephesians 4:29
This verse emphasizes speaking what is helpful for building others up, contradicting the corrupt communication described in Psalms 36:3.
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 Colossians 4:6
Encourages speech to be gracious and seasoned with salt, which contradicts the deceitfulness mentioned in Psalms 36:3.
Colossians 4:6: Let your speech [be] alway with grace, seasoned with salt, that ye may know how ye ought to answer every man.
Contradiction with Proverbs 12:22
Highlights that lying lips are an abomination to the Lord, in contrast to the iniquity and deceit in Psalms 36:3.
Proverbs 12:22: Lying lips [are] abomination to the LORD: but they that deal truly [are] his delight.