Contradiction with 1 John 1:8
This verse suggests that if we claim to be without sin, we deceive ourselves, contradicting the idea in Romans 6:6 that our "old man is crucified with him" leading to an end of being dominated by sin.
1 John 1:8: If we say that we have no sin, we deceive ourselves, and the truth is not in us.
Contradiction with Ecclesiastes 7:20
This verse states that there is no righteous person on earth who does what is right and never sins, contradicting the implication in Romans 6:6 that believers are no longer enslaved to sin.
Ecclesiastes 7:20: For [there is] not a just man upon earth, that doeth good, and sinneth not.
Contradiction with 1 Corinthians 10:12
This verse warns those who think they stand firm to be careful they don't fall, which contradicts the notion in Romans 6:6 of having defeated the dominion of sin.
1 Corinthians 10:12: Wherefore let him that thinketh he standeth take heed lest he fall.
Contradiction with Galatians 5:17
This verse describes the ongoing struggle between the flesh and the Spirit, which contradicts Romans 6:6's suggestion of our sinful nature being destroyed.
Galatians 5:17: For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.
Contradiction with James 3:2
This verse admits that we all stumble in many ways, contradicting Romans 6:6's claim that our body of sin might be done away with.
James 3:2: For in many things we offend all. If any man offend not in word, the same [is] a perfect man, [and] able also to bridle the whole body.