For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
For. Reason why he needs to cut off "occasion" from his detractors.
False apostles. Those 'overmuch apostles' (note, 2 Corinthians 11:5) are no apostles at all.
Deceitful workers - pretending to be 'workmen' for the Lord, really seeking their own gain.