The passive we should not be judged probably refers to the judgment of Christ (as in verse 32) rather than the judgment of God (as in Good News Bible). Paul means “If we first examine ourselves, there will be nothing for Christ to condemn in our behavior as we share in his Supper.”

Quoted with permission from Ellingworth, Paul and Hatton, Howard A. A Handbook on Paul’s First Letter to the Corinthians, 2nd edition. (UBS Handbook Series). New York: UBS, 1985/1994. For this and other handbooks for translators see here .