By the letter] RV 'with the letter,' i.e. with written law.
Inexcusable] RV 'without excuse': cp. Romans 1:20. Judges] cp. Galatians 2:15. The same things] of the same kind, if not so glaring.
Related Commentaries of Romans 2:1
Romans 2:1
1 Therefore thou art inexcusable, O man, whosoever thou art that judgest: for wherein thou judgest another, thou condemnest thyself; for thou that judgest doest the same things.