Contradiction with Romans 3:23
This verse states that all have sinned, which could contradict the idea of being without sin as suggested in 1 John 3:5.
Romans 3:23: For all have sinned, and come short of the glory of God;
Contradiction with Ecclesiastes 7:20
This verse claims there is not a just man on earth who does good and does not sin, contrasting with 1 John 3:5's implication of sinlessness.
Ecclesiastes 7:20: For [there is] not a just man upon earth, that doeth good, and sinneth not.
Contradiction with Psalms 14:3
This verse declares that everyone has turned aside and become corrupt, no one does good, which contradicts the notion of sinlessness in 1 John 3:5.
Psalms 14:3: They are all gone aside, they are [all] together become filthy: [there is] none that doeth good, no, not one. [filthy: Heb. stinking]
Contradiction with Romans 5:12
It explains that sin entered the world through one man and death through sin, suggesting universal sinfulness contrary to 1 John 3:5's sinlessness.
Romans 5:12: Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned: [for that: or, in whom]
Contradiction with 1 John 1:8
This verse states that if we claim to be without sin, we deceive ourselves, which could conflict with the sinlessness mentioned in 1 John 3:5.
1 John 1:8: If we say that we have no sin, we deceive ourselves, and the truth is not in us.