Contradiction with Genesis 6:5
This verse says every imagination of man's heart is evil continually, contradicting Psalms 7:9 which suggests there are upright hearts.
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 Ecclesiastes 7:20
This verse states there is not a just man on earth, contrasting with Psalms 7:9's implication of righteous individuals.
Ecclesiastes 7:20: For [there is] not a just man upon earth, that doeth good, and sinneth not.
Contradiction with Jeremiah 17:9
This verse describes the heart as deceitful and desperately wicked, contradicting the idea in Psalms 7:9 that hearts can be tried and found upright.
Jeremiah 17:9: The heart [is] deceitful above all [things], and desperately wicked: who can know it?
Paradox #1
Psalms 7:9 talks about God ending the wickedness of the wicked and establishing the righteous, testing the hearts and minds of people. A contradiction might arise when considering the Bible's message of forgiveness and redemption, as it might seem inconsistent to end wickedness without offering a chance for change or forgiveness. This could appear as conflicting with the idea of second chances or unconditional love found elsewhere in the Bible.