Contradiction with Genesis 4:7
While 1 John 3:12 implies Cain was inherently evil, Genesis 4:7 suggests he had the choice to do good.
Genesis 4:7: If thou doest well, shalt thou not be accepted? and if thou doest not well, sin lieth at the door. And unto thee [shall be] his desire, and thou shalt rule over him. [be accepted: or, have the excellency] [unto...: or, subject unto thee]
Contradiction with Matthew 5:39
1 John 3:12 implies a violent response like Cain's, whereas Matthew 5:39 advises turning the other cheek.
Matthew 5:39: But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.
Contradiction with James 2:21
1 John 3:12 discusses evil deeds, whereas James 2:21 praises Abraham for his righteous actions, indicating deeds can be good.
James 2:21: Was not Abraham our father justified by works, when he had offered Isaac his son upon the altar?
Contradiction with Romans 12:21
1 John 3:12 condemns Cain's evil act, but Romans 12:21 encourages overcoming evil with good, suggesting a different approach.
Romans 12:21: Be not overcome of evil, but overcome evil with good.
Contradiction with Ezekiel 18:20
1 John 3:12 suggests Cain was of the wicked one, while Ezekiel 18:20 emphasizes individual responsibility rather than inherent nature.
Ezekiel 18:20: The soul that sinneth, it shall die. The son shall not bear the iniquity of the father, neither shall the father bear the iniquity of the son: the righteousness of the righteous shall be upon him, and the wickedness of the wicked shall be upon him.
Contradiction with Proverbs 15:3
1 John 3:12 implies an evil action unseen, while Proverbs 15:3 states the Lord sees both the evil and the good, impacting accountability.
Proverbs 15:3: The eyes of the LORD [are] in every place, beholding the evil and the good.