Contradiction with Romans 3:20
This verse states that no one will be justified by the works of the law, which can contradict the need for being "born again" emphasized in John 3:7 if interpreted as a legalistic requirement.
Romans 3:20: Therefore by the deeds of the law there shall no flesh be justified in his sight: for by the law [is] the knowledge of sin.
Contradiction with Romans 10:13
This verse suggests that calling on the name of the Lord is enough for salvation, which might be seen as contradicting the necessity of being "born again" as specified in John 3:7.
Romans 10:13: For whosoever shall call upon the name of the Lord shall be saved.
Contradiction with James 2:24
This verse implies that justification is by works and not by faith only, which can be interpreted as contradicting the idea that being "born again," a notion often understood as a transformation of faith is necessary.
James 2:24: Ye see then how that by works a man is justified, and not by faith only.
Contradiction with Luke 10:25-28
This passage suggests that loving God and your neighbor is the key to eternal life, which could be seen as contradicting John 3:7's emphasis on the need to be "born again."
Luke 10:25-28: And, behold, a certain lawyer stood up, and tempted him, saying, Master, what shall I do to inherit eternal life?
Contradiction with Matthew 19:17
This verse emphasizes keeping the commandments to enter into life, which could be seen as contradicting the idea of being "born again" as stated in John 3:7.
Matthew 19:17: And he said unto him, Why callest thou me good? [there is] none good but one, [that is], God: but if thou wilt enter into life, keep the commandments.