Paul reminds us not to judge others, since we are doing the same things, i.e. sin, even simply by savoring the thought of sin in the heart. This way of thinking may be indicative of a belief that we will somehow escape God's judgment. Those who do such things are storing up wrath in Heaven.
God's judgment will come to both the Jew and the Greek, so none will be spared because God shows no partiality. The fact that some have not yet been punished is evidence of God's forbearance and kindness that He is giving us time to repent.
Those who simply refrain from immorality are not necessarily thereby holy, and while those who follow the law will be judged by the Law, those who do not have the Law (Gentiles) will still be judged by the law written on their hearts. The sins committed in the heart will be made plain by the Judgment.
The closing theme is Gerard Satamian's Chansons Sans Paroles Op. 2 Pastorale, from the album Dry Fig Trees. www.magnatune.com