Contradiction with Jeremiah 17:9
Explains that the heart is deceitful above all things, contrasting with Romans 2:15 where the law is written in hearts, which suggests an intrinsic moral compass.
Jeremiah 17:9: The heart [is] deceitful above all [things], and desperately wicked: who can know it?
Contradiction with Genesis 6:5
States that every inclination of the human heart was only evil all the time, contradicting the idea of a law written in the heart suggesting inherent goodness.
Genesis 6:5: And GOD saw that the wickedness of man [was] great in the earth, and [that] every imagination of the thoughts of his heart [was] only evil continually. [every...: or, the whole imagination: the Hebrew word signifieth not only the imagination, but also the purposes and desires] [continually: Heb. every day]
Contradiction with Proverbs 28:26
Warns against trusting in one's own heart, which opposes the concept of the heart having an inherent understanding of the law as mentioned in Romans 2:15.
Proverbs 28:26: He that trusteth in his own heart is a fool: but whoso walketh wisely, he shall be delivered.
Contradiction with Mark 7:21-23
Lists evil things coming from within and defiling a person, contrary to Romans 2:15 where the heart seems to witness to moral law.
Mark 7:21-23: Thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness: [covetousness...: Gr. covetousnesses, wickednesses]
Paradox #1
Romans 2:15 discusses the idea that people can naturally know right from wrong in their hearts, without needing religious laws. A possible contradiction could arise if someone argues that religious laws are essential for knowing good and evil. In this view, saying that people can know morality on their own might seem inconsistent with the belief that divine guidance through laws is necessary.