Contradiction with Matthew 5:44
1 Corinthians 5:9 advises avoiding associating with the immoral, whereas Matthew 5:44 instructs to love your enemies and pray for those who persecute you.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Luke 6:37
1 Corinthians 5:9 suggests separation from sinners, whereas Luke 6:37 emphasizes not judging or condemning others.
Luke 6:37: Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven:
Contradiction with John 13:34
1 Corinthians 5:9 notes limiting associations, while John 13:34 commands to love one another as Jesus loved them, implying inclusive love.
John 13:34: A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another.
Contradiction with Mark 2:17
1 Corinthians 5:9 suggests not keeping company with sinners, but Mark 2:17 highlights Jesus' mission to call sinners, not the righteous, to repentance.
Mark 2:17: When Jesus heard [it], he saith unto them, They that are whole have no need of the physician, but they that are sick: I came not to call the righteous, but sinners to repentance.
Contradiction with Romans 14:13
1 Corinthians 5:9 speaks of disassociation, while Romans 14:13 urges not to judge others but to avoid causing them to stumble.
Romans 14:13: Let us not therefore judge one another any more: but judge this rather, that no man put a stumblingblock or an occasion to fall in [his] brother's way.
Contradiction with Galatians 6:2
1 Corinthians 5:9 focuses on separation from the immoral, while Galatians 6:2 encourages bearing one another's burdens, fulfilling the law of Christ.
Galatians 6:2: Bear ye one another's burdens, and so fulfil the law of Christ.