1. No excuse in judging others (1-3)

Now Paul turns to the law-keeping Jews who were judging the Gentiles as dogs. God chose the Jews and gave them the precious Word not to condemn the Gentiles with self-righteousness. They should preach the gospel to them as a kingdom of priests and a holy nation. The Word of God should not be used to judge, condemn and criticize others but to make myself repent before God and we should use God's word to save others.

2. Repent, don't store up wrath (4-5)

We should not misunderstand the riches of God's kindness, forbearance, and patience when he does not punish the wicked people or our sins immediately. For God is not willing that anyone should perish but all may be saved. (2 Pet3:9) However, if we keep on in our stubbornness with an unrepentant heart, we are only storing up wrath against ourselves for the day of God's wrath which will arrive at any moment when he will judge severely.