Contradiction with Jeremiah 17:9
This verse suggests that the heart is deceitful and desperately wicked, which contradicts the idea in 2 Chronicles 30:12 that God gave people one heart to do His commandment willingly.
Jeremiah 17:9: The heart [is] deceitful above all [things], and desperately wicked: who can know it?
Contradiction with Proverbs 14:12
This verse implies that there is a way that seems right to a man, but its end is death, suggesting personal judgment is flawed, contrasting with the unified heart in 2 Chronicles 30:12.
Proverbs 14:12: There is a way which seemeth right unto a man, but the end thereof [are] the ways of death.
Contradiction with Romans 7:18
Paul speaks here about the inability to perform that which is good, despite wanting to, which contrasts with the willing heart given by God in 2 Chronicles 30:12.
Romans 7:18: For I know that in me (that is, in my flesh,) dwelleth no good thing: for to will is present with me; but [how] to perform that which is good I find not.
Contradiction with Proverbs 21:2
This verse states that every way of a man is right in his own eyes, which contradicts the idea of a collective divine influence on the people's hearts in 2 Chronicles 30:12.
Proverbs 21:2: Every way of a man [is] right in his own eyes: but the LORD pondereth the hearts.
Contradiction with Genesis 6:5
This verse describes the wickedness of man being great on the earth, with every intent of the thoughts of his heart being only evil continually, which contrasts with the unity and goodness of heart in 2 Chronicles 30:12.
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]