Contradiction with Matthew 7:1
This verse advises not to judge others, contradicting the judgment passed by Paul in 1 Corinthians 5:3.
Matthew 7:1: Judge not, that ye be not judged.
Contradiction with James 4:12
This verse states there is only one lawgiver and judge, which contrasts with Paul’s assertion of judgment in the earlier passage.
James 4:12: There is one lawgiver, who is able to save and to destroy: who art thou that judgest another?
Contradiction with Romans 14:4
This verse questions who has the right to judge someone else's servant, in opposition to Paul’s judgment of the Corinthians’ actions.
Romans 14:4: Who art thou that judgest another man's servant? to his own master he standeth or falleth. Yea, he shall be holden up: for God is able to make him stand.