Contradiction with 1 John 3:9
States that whosoever is born of God does not commit sin, contradicting the listing of sins in Matthew 15:19 as possible for followers.
1 John 3:9: Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God. [is born: or, has been born]
Contradiction with James 3:10
Mentions blessings and curses coming from the same mouth, whereas Matthew 15:19 suggests evil comes from within the heart.
James 3:10: Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be.
Contradiction with Proverbs 4:23
Advises to keep the heart with all diligence for out of it are the issues of life, contrasting with Matthew 15:19 which ascribes evil thoughts naturally arising from the heart.
Proverbs 4:23: Keep thy heart with all diligence; for out of it [are] the issues of life. [with...: Heb. above all keeping]
Contradiction with Genesis 1:27
Indicates mankind was created in the image of God, juxtaposing with Matthew 15:19's depiction of the heart's evil inclinations.
Genesis 1:27: So God created man in his [own] image, in the image of God created he him; male and female created he them.
Contradiction with Romans 7:15
Paul describes doing what he hates and not doing what he wants, suggesting a struggle not directly addressed in Matthew 15:19's summary of evil deeds.
Romans 7:15: For that which I do I allow not: for what I would, that do I not; but what I hate, that do I. [allow: Gr. know]