“Or despisest thou the riches of His goodness and forbearance and longsuffering; not knowing that the goodness of God leadeth thee to repentance?”- Romans 2:4

Observe that the apostle singled out an individual (Romans 2:1) who had condemned others for transgressions, in which he himself indulged. This man owned so much spiritual light that he knew right from wrong, and he diligently used his knowledge to judge others, condemning them for their transgressions. As for himself, he preferred the shade, where no fierce light might beat on his own conscience and disturb his unholy peace. His judgment was spared the pain of dealing with his home offenses by being set to work upon the faults of others. He had a candle, but he did not place it on the table to light his own room; he held it out at the front door to inspect therewith his neighbours who passed by. Paul looks this man in the face and says… “Thinkest thou this, O man, that judgest them which do such things, and doest the same, that thou shalt escape the judgment of God?” Well did the apostle aim that piercing arrow; it hits the center of the target and strikes a folly common to mankind.

The punishment which is due to sin the guilty reckon to be surely impending upon others, but they scarce believe that it can ever fall upon themselves. A personal doom for themselves is an idea which they will not harbour: if the dread thought should light upon them they shake it off as men shake snow-flakes from their cloaks…Do men indeed believe that they alone shall go unpunished? No man will subscribe to that notion when it is written down in black and white, and yet the mass of men lives as if this were true; I mean the mass of men who have sufficient light to condemn sin in others. They start back from the fact of their own personal guiltiness and condemnation and go on in their ungodliness as if there were no great white throne for them, no last assize, no judge, no word of condemnation, and no hell of wrath. Alas, poor madmen, thus to dream! O Spirit of Truth save them from this fatal infatuation. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1714.cfm