What is the meaning of 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. (Romans 2:1 KJV)

William Burkitt’s Commentary

Lest the Jews should swell and be puffed up with pride by hearing what the apostle said in the former chapter of the detestable wickedness of the Gentiles and the heavy displeasure of God against them for the same; St. Paul in this chapter pronounces the Jews to be guilty of the same sins of which he had accused the Gentiles, affirming that the Jews had offended as much against the law of Moses as the Gentiles had offended against the law of nature; and consequently, their censuring and judging others when they did the same things themselves, would render them totally inexcusable at God’s tribunal.  Therefore thou art inexcusable, Oh man, that judgest another, and by doing the same things condemnest thyself.

Learn hence, 1. That it is too usual and common practice for one to condemn another for his sin, meanwhile, he himself does the same thing.

2. That when persons commit themselves the sins which they censure and condemn in others, they are totally inexcusable, and pronounce sentence against themselves.