Contradiction with 1 John 3:20
This verse states that God is greater than our heart and knows all things, which suggests that self-assessment can be flawed, whereas 1 Corinthians 4:4 suggests a clean conscience is enough proof of innocence.
1 John 3:20: For if our heart condemn us, God is greater than our heart, and knoweth all things.
Contradiction with Jeremiah 17:9
This verse indicates that the heart is deceitful and desperately wicked, implying that one cannot fully trust their own conscience, contrasting with the confidence in conscience in 1 Corinthians 4:4.
Jeremiah 17:9: The heart [is] deceitful above all [things], and desperately wicked: who can know it?
Contradiction with Proverbs 28:26
This verse warns against trusting one's own heart, which contradicts 1 Corinthians 4:4's implication that a clear conscience can affirm one's righteousness.
Proverbs 28:26: He that trusteth in his own heart is a fool: but whoso walketh wisely, he shall be delivered.
Contradiction with Matthew 7:21-23
Here, Jesus declares that not everyone who calls Him 'Lord' will enter the kingdom of heaven, indicating that self-perception of righteousness can be misguided, conflicting with 1 Corinthians 4:4's emphasis on personal conscience.
Matthew 7:21-23: Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.